30235 Warn on uncomitted changes (cla: yes, tool)

30254 Reland: Ensure that flutter run/drive/test/update_packages only downloads required artifacts  (cla: yes, tool)

30275 Implement compute for async function (#16265) (cla: yes, framework)

30276 Random trivial fixes in the animation packages (a: animation, cla: yes, framework, waiting for tree to go green)

30304 no need .toList() before .join() (cla: yes, framework)

30305 shorter nullable list duplications (cla: yes, framework, waiting for tree to go green)

30327 Add “feature request” issue template (cla: yes, team)

30339 Add buttons to gestures (a: desktop, cla: yes, framework)