License update - Batch 18

[mossmana]

Updates the license headers for:

1. packages/devtools_app/lib/src/screens/inspector_v2/inspector_controller.dart
2. packages/devtools_app/lib/src/screens/inspector_v2/inspector_data_models.dart
3. packages/devtools_app/lib/src/screens/inspector_v2/inspector_screen_body.dart
4. packages/devtools_app/lib/src/screens/inspector_v2/inspector_tree_controller.dart
5. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/box/box.dart
6. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/flex/flex.dart
7. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/flex/utils.dart
8. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/arrow.dart
9. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/dimension.dart
10. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/free_space.dart
11. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/layout_explorer_widget.dart
12. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/overflow_indicator_painter.dart
13. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/theme.dart
14. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/utils.dart
15. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/widget_constraints.dart
16. packages/devtools_app/lib/src/screens/inspector_v2/layout_explorer/ui/widgets_theme.dart
17. packages/devtools_app/lib/src/screens/inspector_v2/widget_details.dart
18. packages/devtools_app/lib/src/screens/inspector_v2/widget_properties/properties_view.dart
19. packages/devtools_app/test/screens/inspector_v2/diagnostics_test.dart
20. packages/devtools_app/test/screens/inspector_v2/inspector_error_navigator_test.dart
21. packages/devtools_app/test/screens/inspector_v2/inspector_integration_test.dart
22. packages/devtools_app/test/screens/inspector_v2/inspector_screen_test.dart
23. packages/devtools_app/test/screens/inspector_v2/inspector_tree_test.dart
24. packages/devtools_app/test/screens/inspector_v2/layout_explorer/flex/arrow_test.dart
25. packages/devtools_app/test/screens/inspector_v2/layout_explorer/flex/flex_test.dart
26. packages/devtools_app/test/screens/inspector_v2/layout_explorer/inspector_data_models_test.dart
27. packages/devtools_app/test/screens/inspector_v2/layout_explorer/layout_explorer_serialization_delegate.dart
28. packages/devtools_app/test/screens/inspector_v2/layout_explorer/layout_explorer_test_utils.dart
29. packages/devtools_app/test/screens/inspector_v2/layout_explorer/widget_theme_test.dart
30. packages/devtools_app/test/screens/inspector_v2/utils/inspector_tree.dart

#8216

Pre-launch Checklist

• I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
• I read the [Tree Hygiene] wiki page, which explains my responsibilities.
• I read the [Flutter Style Guide] recently, and have followed its advice.
• I signed the [CLA].
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or there is a reason for not adding tests.