48843 Roll engine fd269f60bfc6..82a851cf21cf (2 commits) (autoroller: commit, cla: yes)

48844 Require Visual Studio 2019 for Windows (cla: yes, tool, waiting for tree to go green)

48845 Increase iteration counts to help improve noise in benchmark results. (cla: yes, team)

48851 [flutter_tools] Reland enable fast-start by default for Android (cla: yes, team, tool)

48852 Roll engine 82a851cf21cf..ddaa9dc95f7b (2 commits) (autoroller: commit, cla: yes)

48853 Add missing type arguments to fix implicit dynamic. (cla: yes, framework, waiting for tree to go green)