89237 Add ability to customize drawer shape and color as well as theme drawer properties (framework, f: material design, cla: yes, waiting for tree to go green)

89242 Update StretchingOverscrollIndicator for reversed scrollables (framework, f: scrolling, cla: yes, a: quality, waiting for tree to go green, will affect goldens, a: annoyance)

89264 Make sure Opacity widgets/layers do not drop the offset (framework, f: material design, cla: yes, will affect goldens)

89315 Avoid pointer collision in navigator_test (framework, cla: yes)

89327 Make FilteringTextInputFormatter’s filtering Selection/Composing Region agnostic (framework, cla: yes, waiting for tree to go green)