[CQ] migrate off deprecated ListCellRendererWrapper

[pq]

ListCellRendererWrapper is deprecated, with favor given to SimpleListCellRenderer:

https://github.com/JetBrains/intellij-community/blob/8e46815dd140357c19061ceba77416d40d81866d/platform/platform-api/src/com/intellij/ui/ListCellRendererWrapper.java#L18-L24

Verifier ouput:

      #Deprecated class com.intellij.ui.ListCellRendererWrapper reference
          Deprecated class com.intellij.ui.ListCellRendererWrapper is referenced in io.flutter.run.bazelTest.FlutterBazelTestConfigurationEditorForm$1.<init>(FlutterBazelTestConfigurationEditorForm)
          Deprecated class com.intellij.ui.ListCellRendererWrapper is referenced in io.flutter.run.bazelTest.FlutterBazelTestConfigurationEditorForm$1
          Deprecated class com.intellij.ui.ListCellRendererWrapper is referenced in io.flutter.run.test.TestForm$1.<init>(TestForm)
          Deprecated class com.intellij.ui.ListCellRendererWrapper is referenced in io.flutter.run.test.TestForm$1

---

• I’ve reviewed the contributor guide and applied the relevant portions to this PR.

Contribution guidelines:

• See our [contributor guide](https://github.com/dart-lang/sdk/blob/main/CONTRIBUTING.md for general expectations for PRs.
• Larger or significant changes should be discussed in an issue before creating a PR.
• Dart contributions to our repos should follow the Dart style guide and use dart format.
• Java and Kotlin contributions should strive to follow Java and Kotlin best practices (discussion).