64255 Revert “run the test longer time for multi_widget_construction_perf” (cla: yes, team, waiting for tree to go green)

64258 update TimelineStream in flutter_driver (a: tests, cla: yes, framework, waiting for tree to go green)

64267 [framework] make hit slop based on device pointer kind for drag/pan/scale gestures (a: desktop, cla: yes, f: gestures, framework)

64268 Fix placement for SnackBarBehavior.floating (a: quality, cla: yes, f: material design, framework, severe: regression, waiting for tree to go green)

64269 Mark e2e version of ios32 transition test nonflaky (cla: yes, team, waiting for tree to go green)