56630 [flutter tools] Fix an assert in IOSSimulator.getLogReader (cla: yes, tool)

56633 [flutter_tools] enable tree-shake-icons by default for non-web targets (cla: yes, tool)

56634 [flutter_tools] rename getSkSL file output ext to .sksl.json (cla: yes, tool)

56638 Perf test with SkSL warm-up (cla: yes, perf: speed, severe: performance, waiting for tree to go green)

56641 Add 2 new keyboard types and infer keyboardType from autofill hints (cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)

56645 Localized new strings added in the redesigned Material Date Picker (a: internationalization, cla: yes, f: material design, framework, waiting for tree to go green)