Repository: flutter
Issue: iOS: italic system font doesn't render properly
Labels: platform-ios,engine,a: typography,e: OS-version specific,has reproducible steps,P2,found in release: 3.10,team-ios,triaged-ios,found in release: 3.13

### Is there an existing issue for this?

- [X] I have searched the [existing issues](https://github.com/flutter/flutter/issues)
- [X] I have read the [guide to filing a bug](https://flutter.dev/docs/resources/bug-reports)

### Steps to reproduce

flutter create

```dart
  runApp(
    MaterialApp(
      home: Material(
        child: Center(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Text("foo"),
              Text("foo", style: TextStyle(fontStyle: FontStyle.italic)),
            ],
          ),
        ),
      ),
    ),
  );
```

flutter run ios


<img width="252" alt="Screenshot 2023-07-13 at 9 15 23 AM" src="https://github.com/flutter/flutter/assets/666539/dcf8e916-949c-4c8d-aa53-51367ed19258">



twitter thread: https://twitter.com/luke_pighetti/status/1674126674663751680

### Expected results

it renders system font in italic properly

### Actual results

it doesn't

### Flutter Doctor output

<details><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.10.5, on macOS 13.4 22F66 darwin-arm64, locale en-US)
    • Flutter version 3.10.5 on channel stable at /Users/lukepighetti/development/flutter/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 796c8ef792 (4 weeks ago), 2023-06-13 15:51:02 -0700
    • Engine revision 45f6e00911
    • Dart version 3.0.5
    • DevTools version 2.23.1

[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
    • Android SDK at /Users/lukepighetti/Library/Android/sdk
    • Platform android-33, build-tools 32.1.0-rc1
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.3.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14E300c
    • CocoaPods version 1.12.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301)

[✓] VS Code (version 1.80.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.68.0

[✓] Connected device (4 available)
    • Pixel 4 (mobile)          • 99261FFAZ00F4G                       • android-arm64  • Android 13 (API 33)
    • iPhone 14 (16.2) (mobile) • 51B3F17C-CB32-4B1C-B7DA-C8C783B9349A • ios            • com.apple.CoreSimulator.SimRuntime.iOS-16-2 (simulator)
    • macOS (desktop)           • macos                                • darwin-arm64   • macOS 13.4 22F66 darwin-arm64
    • Chrome (web)              • chrome                               • web-javascript • Google Chrome 114.0.5735.198

[✓] Network resources
    • All expected network resources are available.

• No issues found!

```


</details>