Repository: flutter
Issue: `TextField` has wrong cursor location, possibly because of `paragraph.getBoxesForRange`
Labels: a: text input,engine,a: typography,has reproducible steps,P2,found in release: 3.10,found in release: 3.11,team-engine,triaged-engine

### Possible cause analysis

I briefly looked at it. The direct cause is `paintRegularCursor` uses the wrong offset. The deeper cause seems to be in `getRectFromDownstream`, which calls `paragraph.getBoxesForRange(3, 4)`. The getBoxesForRange yields something liek `[TextBox.fromLTRBD(0.0, 264.0, 0.0, 282.0, TextDirection.ltr)]`, while the `top` should be roughly 150. (Detailed numbers may vary since I did experiments on another minimal reproducible sample; but the idea remains the same).

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### 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

Hi thanks for the library! However, TextField has wrong cursor location :(

1. Run app
2. Tap roughly the left-bottom of the text field, such that the cursor appears

P.S. This bug occurs when I am attempt workarounds of https://github.com/flutter/flutter/issues/126258.

I can reproduce it both in 3.7 and in master at https://github.com/flutter/flutter/commit/8ab782d08a2e0111a96dc3ebb0fbfe8b08757b24

### Expected results

The cursor should be *just* below the green rect.

### Actual results

Much, much bigger space. Indeed it seems as big as the first line.

![IMG_20230511_132715](https://github.com/flutter/flutter/assets/5236035/0355ad11-c481-4ea7-b13d-be4383bb4f77)

### Code sample

<details><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(),
        body: TextField(
          controller: MyController(),
          style: const TextStyle(fontSize: 15),
          strutStyle: const StrutStyle(fontSize: 15),
          maxLines: null,
        ),
      ),
    );
  }
}

class MyController extends TextEditingController {
  MyController() : super.fromValue(TextEditingValue(text: 'A\n', selection: TextSelection.collapsed(offset: 1)));

  TextSpan buildTextSpan({required BuildContext context, TextStyle? style, required bool withComposing}) {
    return TextSpan(
      style: style,
      children: [
        WidgetSpan(
          child: LayoutBuilder(
            builder: (_, constraints) => ConstrainedBox(
              constraints: BoxConstraints(maxWidth: constraints.maxWidth - 4),
              child: Container(width: 1000, height: 100, color: Colors.green),
            ),
          ),
        ),
        const TextSpan(text: '\n'),
      ],
    );
  }
}
```

</details>


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