Repository: flutter
Issue: Outputs 'Wrap' and 'Row' differently at specific resolutions
Labels: framework,has reproducible steps,P2,found in release: 3.7,found in release: 3.9,team-framework,triaged-framework

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## Steps to Reproduce

<!-- You must include full steps to reproduce so that we can reproduce the problem. -->

When i set width of Container() that Wrap()'s children using layoutBuilder() constraints.maxWidth, 
When Wrap is used at a specific resolution, setting the width based on maxWidth will cause the Container to move to the next line.

This does not occur in Row or GridView, but only in Wrap.

[codepen](https://codepen.io/opv/pen/PoNKEoP)
```
import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      home: MyWidget(),
    ),
  );
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: LayoutBuilder(
        builder: (context, constraints) {
          return Stack(
            children: [
             Container(
               width: constraints.maxWidth,
               height: constraints.maxHeight,
               color: Colors.amber,
               child: Center(child: Text("${constraints.maxHeight}")),
             ),
             Column(
               crossAxisAlignment: CrossAxisAlignment.stretch,
               children:[
               Row(
               children: [
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
                 Container(
                color: Colors.red,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
               ]
               ),
               Wrap(
            children: [
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
              Container(
                color: Colors.teal,
                width: constraints.maxWidth / 7,
                height: 30,
                child: Center(child:Text("${constraints.maxWidth / 7}")),
              ),
            ],
          )
             ]),
            
            ],
          );
        }
      ),
    );
  }
}

```

**Expected results:** <!-- what did you want to see? -->
![image](https://user-images.githubusercontent.com/35303552/91853879-d07b8d00-ec9d-11ea-8f2f-b90af7ec7d2a.png)

**Actual results:** <!-- what did you see? -->
![image](https://user-images.githubusercontent.com/35303552/91853278-ee94bd80-ec9c-11ea-9272-5ec748402b8d.png)
<details>
  <summary>Logs</summary>

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      Run your application with `flutter run --verbose` and attach all the
      log output below between the lines with the backticks. If there is an
      exception, please see if the error message includes enough information
      to explain how to solve the issue.
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```
```

<!--
     Run `flutter analyze` and attach any output of that command below.
     If there are any analysis errors, try resolving them before filing this issue.
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```
```

<!-- Finally, paste the output of running `flutter doctor -v` here. -->

```
$ flutter doctor -v
[√] Flutter (Channel beta, 1.21.0-9.2.pre, on Microsoft Windows [Version 10.0.19041.450], locale ko-KR)
    • Flutter version 1.21.0-9.2.pre at C:\src\flutter
    • Framework revision 81a45ec2e5 (5 days ago), 2020-08-27 14:14:33 -0700
    • Engine revision 20a9531835
    • Dart version 2.10.0 (build 2.10.0-7.3.beta)


[√] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at C:\Users\Hskim\AppData\Local\Android\sdk
    • Platform android-30, build-tools 30.0.2
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 4.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 48.1.2
    • Dart plugin version 193.7361
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] VS Code (version 1.48.0)
    • VS Code at C:\Users\Hskim\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.13.2

[√] Connected device (5 available)
    • SM G930L (mobile)           • 192.168.0.15:5555 • android-arm64  • Android 8.0.0 (API 26)
    • sdk gphone x86 arm (mobile) • emulator-5554     • android-x86    • Android 11 (API 30) (emulator)
    • Web Server (web)            • web-server        • web-javascript • Flutter Tools
    • Chrome (web)                • chrome            • web-javascript • Google Chrome 84.0.4147.135
    • Edge (web)                  • edge              • web-javascript • Microsoft Edge 85.0.564.41

• No issues found!

```

</details>