The test Tapping the Live Text button calls onLiveTextInput in packages/flutter/test/widgets/editable_text_test.dart was flagged with an in-code TODO:

// TODO(justinmc): Widgets tests should not import Material.
// https://github.com/flutter/flutter/issues/177028

This test lives in the Widgets layer but was using MaterialApp, Typography.material2018(), Colors.blue, Colors.grey, and materialTextSelectionHandleControls — none of which are actually required for what it exercises (the Live Text button inside CupertinoAdaptiveTextSelectionToolbar).

Changes:

• Replace MaterialApp with TestWidgetsApp (from widgets_app_tester.dart, already imported in this file).
• Replace Typography.material2018().black.titleMedium! with const TextStyle(fontSize: 14.0).
• Replace Colors.blue / Colors.grey with raw Color values, matching the pattern already used by the adjacent test in the same file.
• Replace materialTextSelectionHandleControls with emptyTextSelectionControls.
• Remove the TODO.

The file-level package:flutter/material.dart import remains because many other tests in this 19k-line file still legitimately depend on it. This PR resolves the one flagged test block.

Related Issues

Part of #177028
Related: #177412

Tests

No behavior change; the same assertions are preserved. Verified locally with:

flutter test --name "Tapping the Live Text button calls onLiveTextInput" packages/flutter/test/widgets/editable_text_test.dart

Pre-launch Checklist

• I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
• I read the [Tree Hygiene] page, which explains my responsibilities.
• I read and followed the [Flutter Style Guide].
• I listed at least one issue that this PR fixes in the description above.
• I added new tests to check the change I am making, or this PR is [test-exempt].
• All existing and new tests are passing.