26647 [web] Fall-back to a DOM node if Shadow DOM is unavailable. (cla: yes, waiting for tree to go green, platform-web)

26649 [web] migrate more felt code to null safety (cla: yes, platform-web)

26659 small clean-up of the license script (cla: yes, platform-web)

26662 Add test for CanvasKit text memory crash (cla: yes, platform-web)

26668 migrate the rest of dev/ to null safety (cla: yes, waiting for tree to go green, platform-web)

26669 [flutter_releases] Flutter Stable 2.2.2 Engine Cherrypicks (cla: yes, platform-web)

26674 [web] more null safety in tests (cla: yes, platform-web)