66742 [flutter_tools] hot reload/restart update for asset manager change (cla: yes, tool)

66743 cleanup completed todo and unused variable for WidgetTester (a: tests, cla: yes, framework, waiting for tree to go green)

66745 move resampler to handlePointerEvent and fix complex_layout_android__scroll_smoothness with PointerEvent (a: tests, cla: yes, framework, team, waiting for tree to go green)

66748 Improve consistency of top-level help text (cla: yes, tool, waiting for tree to go green)

66754 [desktop] default to shrink wrap on desktop platforms (cla: yes, f: material design, framework, waiting for tree to go green)

66755 [flutter_tools] dont let crash reporter crash tool (cla: yes, tool)