Repository: flutter
Issue: debugNeedsLayout assertion failed in background page under SelectableRegion
Labels: c: crash,framework,f: routes,has reproducible steps,P2,f: selection,found in release: 3.7,found in release: 3.8,team-framework,triaged-framework

## Steps to Reproduce

1. Create a new Flutter project.
2. Replace `main.dart` with the following.
3. Run in Chrome.

**Expected results:** "foreground" text is visible, no exceptions

**Actual results:** "foreground" text is visible, an exception in console:

```
======== Exception caught by scheduler library =====================================================
The following assertion was thrown during a scheduler callback:
Assertion failed: file:///home/alexey/snap/flutter/common/flutter/packages/flutter/lib/src/rendering/paragraph.dart:1001:12
!debugNeedsLayout
is not true

When the exception was thrown, this was the stack: 
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49  throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3    assertFailed
packages/flutter/src/rendering/paragraph.dart 1001:13                         getBoxesForSelection
packages/flutter/src/rendering/paragraph.dart 1728:45                         get [_rect]
packages/flutter/src/rendering/paragraph.dart 1702:44                         getTransformToParagraph
packages/flutter/src/rendering/paragraph.dart 1707:12                         getTransformTo
packages/flutter/src/widgets/selectable_region.dart 1599:8                    [_compareScreenOrder]
dart-sdk/lib/internal/sort.dart 69:51                                         _insertionSort
dart-sdk/lib/internal/sort.dart 58:7                                          _doSort
dart-sdk/lib/internal/sort.dart 33:5                                          sort
dart-sdk/lib/_internal/js_dev_runtime/private/js_array.dart 460:12            sort]
packages/flutter/src/widgets/selectable_region.dart 1506:70                   <fn>
packages/flutter/src/widgets/selectable_region.dart 1506:75                   [_flushAdditions]
packages/flutter/src/widgets/selectable_region.dart 1500:7                    [_updateSelectables]
packages/flutter/src/widgets/selectable_region.dart 1492:9                    <fn>
packages/flutter/src/scheduler/binding.dart 1289:15                           [_invokeFrameCallback]
packages/flutter/src/scheduler/binding.dart 1227:9                            handleDrawFrame
packages/flutter/src/scheduler/binding.dart 942:7                             <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/isolate_helper.dart 48:19       internalCallback
====================================================================================================
```

The exception is thrown by the background page of `Navigator`. If one of the pages is deleted, everything works fine. So this is not a problem to the foreground page but it clutters the console and may prevent background pages from some desired background activity.

<details>
<summary>main.dart</summary>

```dart
import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: OneSelectableRegionPage(),
    );
  }
}

final _focusNode = FocusNode();

class OneSelectableRegionPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return SelectableRegion(
      focusNode: _focusNode,
      selectionControls: materialTextSelectionControls,
      child: Navigator(
        pages: [
          MaterialPage(
            child: Scaffold(body: Text('background')),
          ),
          MaterialPage(
            child: Scaffold(body: Text('foreground')),
          ),
        ],
        onPopPage: (_, __) => false,
      ),
    );
  }
}
```

</details>

<details>
  <summary>flutter doctor -v</summary>

```
[✓] Flutter (Channel stable, 3.7.1, on Ubuntu 20.04.5 LTS 5.14.0-1056-oem, locale en_US.UTF-8)
    • Flutter version 3.7.1 on channel stable at /home/alexey/snap/flutter/common/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 7048ed95a5 (9 hours ago), 2023-02-01 09:07:31 -0800
    • Engine revision 800594f1f4
    • Dart version 2.19.1
    • DevTools version 2.20.1

[!] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /home/alexey/Android/Sdk
    ✗ cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/linux#android-setup for more details.

[✓] Chrome - develop for the web
    • Chrome at google-chrome

[✓] Linux toolchain - develop for Linux desktop
    • clang version 10.0.0-4ubuntu1
    • cmake version 3.16.3
    • ninja version 1.10.0
    • pkg-config version 0.29.1

[✓] Android Studio (version 2021.2)
    • Android Studio at /home/alexey/bin/android-studio
    • Flutter plugin version 71.0.2
    • Dart plugin version 212.5744
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.74.3)
    • VS Code at /usr/share/code
    • Flutter extension can be installed from:
      🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (2 available)
    • Linux (desktop) • linux  • linux-x64      • Ubuntu 20.04.5 LTS 5.14.0-1056-oem
    • Chrome (web)    • chrome • web-javascript • Google Chrome 109.0.5414.119

[✓] HTTP Host Availability
    • All required HTTP hosts are available

! Doctor found issues in 1 category.
```

</details>