Fixes https://github.com/flutter/flutter/issues/138227. Work towards https://github.com/flutter/flutter/issues/82948

In https://github.com/dart-lang/sdk/commit/c033718da0502ed92609f8c6cee2f6a59ccc058e, the analyzer's support for `analysis_options_user.yaml` is dropped. So no lint is reported in this test, as expected. This PR changes the test to expect no lint, and also no write the edits that trigger the lint.