Describe the bug
The status indicator in the gutter for test doesn't show the running state. Right now, you can only tell that the tests are running by locating the floating toolbar, but this gets confusing when you also have an emulator running which has its own toolbar.

To Reproduce
Steps to reproduce the behavior:

1. Create a test
2. Run it once
3. On subsequent runs, it doesn't show the running state, only success and error

Expected behavior
Display a loading spinner or another icon when a test in running.

Video

• Operating System and version: Linux 6.6.7-arch1-1
• VS Code version: 1.85.1
• Dart extension version: v3.80.0
• Dart/Flutter SDK version: Flutter 3.16.3 • channel stable | Dart 3.2.3 (stable)