Visual updates for PageDotIndicators

TODOs have been added for verifying and updating the Outline, right to left mode,
and the entry animation. This CL is complex, and those have been left out on purpose.

Bug: 394355070
Test: Verified this behavior looks good in LTR on the workspace.
Flag: com.android.launcher3.enable_launcher_visual_refresh
Change-Id: I8f0192f461d344360572411e1a62921fd65ba600