56928 Add mirror overrides to doctor output (a: triage improvements, cla: yes, t: flutter doctor, tool, waiting for tree to go green)

56934 Revert “[flutter_tools] hide tree-shake-icons” (cla: yes, tool, waiting for tree to go green)

56943 [flutter_tools] expand Regexp log match to include more AndroidRuntime failures (cla: yes, tool, waiting for tree to go green)

56945 [flutter_tools] unblock fuchsia roll (cla: yes, tool, waiting for tree to go green)

56946 [flutter_tools] introduce a BuildSystem interface (cla: yes, tool, waiting for tree to go green)

56958 Updated dwds (and other packages) (cla: yes, d: examples, team, tool, waiting for tree to go green)