78991 Manually close the tree (cla: yes, team)

78992 Revert “Roll Plugins from d7125cdb91c0 to ce1cf17352f1 (17 revisions)” (cla: yes)

78995 [flutter_tools] use existing service implementations for web (cla: yes, tool, waiting for tree to go green)

79002 Manual roll engine to d59a01d to b5e15d0 (15 commits) (cla: yes, engine, waiting for tree to go green, will affect goldens)

79003 [flutter] use null aware operators for function invocations (cla: yes, f: material design, framework, waiting for tree to go green)

79005 Revert “Remove keyLabel and debugName from Logical/PhysicalKeyboardKey” (a: tests, cla: yes, framework, team)