51570 Roll engine 060a7733a654..c0e29b6000a4 (1 commits) (cla: yes, waiting for tree to go green)

51577 Revert “Fix handling backspace on macos with text selection” (a: desktop, a: text input, cla: yes, framework)

51578 [flutter_tools] swap mustache dependency for mustache_template (cla: yes, team, tool)

51586 Roll engine c0e29b6000a4..2914e4ddf6c7 (3 commits) (cla: yes, waiting for tree to go green)

51590 [flutter_tools] allow configuring libraries spec path for the web compilation (cla: yes, tool, waiting for tree to go green)