90483 Revert “Reland “Migrate android_semantics_testing to null safety”” (team, a: accessibility, cla: yes)

90535 [module_test_ios] trying tap the buttons again if the first time didn’t work (team, cla: yes, waiting for tree to go green)

90557 [flutter_conductor] Update README (team, cla: yes, waiting for tree to go green)

90621 [flutter_conductor] implement UI scaffold (team, cla: yes)

90642 Migrate Gradle (team, tool, a: accessibility, cla: yes, d: examples, integration_test)

90708 Implemented getter to expose current url strategy for web plugins (team, cla: yes, waiting for tree to go green)