75624 Add more checks when use Navigator 2.0 (cla: yes, framework, waiting for tree to go green)

75637 Remove “unnecessary” imports in test/rendering (cla: yes, framework, waiting for tree to go green)

75649 Fix for VelocityTracker deprecation (cla: yes, framework, team, waiting for tree to go green)

75666 Create an InlineSpanSemanticsInformation only if the TextSpan has text (cla: yes, framework)

75669 Revert “Fix/ValueListenableBuilder rebuilds” (cla: yes, framework, waiting for tree to go green)

75670 CupertinoPageTransition Optimizations (cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)