Repository: flutter
Issue: [bug] TextInput cursor positioned over hintText
Labels: a: text input,framework,f: material design,c: proposal,P3,team-text-input,triaged-text-input

When using a hintText in an InputDecoration for a TextField, the cursor and the hintText are too close.
<img src="https://user-images.githubusercontent.com/70573/63913981-3ccb0d00-ca08-11e9-8373-6454ad787974.png" width="50%"/>

Search widget code: 
```dart
import 'package:flutter/material.dart';

class SearchWidget extends StatelessWidget {
  final ValueChanged<String> onChanged;

  SearchWidget({this.onChanged});

  @override
  Widget build(BuildContext context) {
    final textStyle = Theme.of(context)
        .primaryTextTheme
        .subhead
        .copyWith(color: Colors.white);

    return Theme(
      data: ThemeData(
        primaryColor: Colors.white,
      ),
      child: Container(
        padding: EdgeInsets.all(8),
        child: TextField(
          minLines: 1,
          autofocus: false,
          onChanged: onChanged,
          cursorColor: Theme.of(context).accentColor,
          style: textStyle,
          decoration: InputDecoration(
              contentPadding: EdgeInsets.all(0),
              hintStyle: textStyle,
              border: OutlineInputBorder(
                borderRadius: BorderRadius.circular(8),
              ),
              prefixIcon: Icon(Icons.search),
              hintText: 'Search',
              alignLabelWithHint: true),
        ),
      ),
    );
  }
}

```

## Proposal

Flutter should move the hintText a few pixels to the right. To match material design guidelines
<img src="https://material.io/components/assets/1Db4T2v9dt2RCOgR4DESgnftJY0pYqXvJ/textfields-outlined-dense.png" width="100%"/>
https://material.io/components/text-fields/#usage




flutter doctor -v
[✓] Flutter (Channel master, v1.9.6-pre.56, on Mac OS X 10.14.6 18G87, locale pt-BR)
    • Flutter version 1.9.6-pre.56 at /Users/juliocotta/flutter/flutter
    • Framework revision c1cb68004a (12 hours ago), 2019-08-28 10:33:43 -0700
    • Engine revision c9d9b5b8f8
    • Dart version 2.5.0

 
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    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
    • All Android licenses accepted.

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    • Flutter plugin version 38.2.3
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[✓] Connected device (1 available)
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• No issues found!