63794 Ignore/fix dead_code checks for weak-only null checks. (cla: yes, framework)

63795 Return host and port from devtools launcher (cla: yes, tool, waiting for tree to go green)

63796 [flutter_tool] Fix some create_test.dart tests on Windows (cla: yes, tool)

63797 add flutter_gallery__transition_perf_e2e to ios tests (cla: yes, team, waiting for tree to go green)

63799 bug fix for flutter_gallery__transition_perf(_with_semantics) (a: accessibility, cla: yes, team)

63801 Mark nonflaky tests as such (cla: yes, team, waiting for tree to go green)

63804 drop xcpretty for tests (cla: yes, team)