[material_ui] Remove no shuffle from text field tests

[ValentinVignal]

Part of flutter/flutter#85160

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[gemini-code-assist]

Code Review

This pull request removes the 'no-shuffle' tag and associated TODO comments from the test file packages/material_ui/test/text_field_test.dart. There are no review comments, so no feedback is provided.

[ValentinVignal]

This doesn't need a pending changelog file since it only affects a test