Toolkit touch boost to per-uid in sf scheduler

Fix where the toolkit touchboost ("HighHint" category) is ignored by
ExplicitDefault frameRate# vote **only** if it has the same UID (app).

- App that setFrameRate(#, default compatibility) still disables touch
  boost
- Fixes cases such as game with setFrameRate(#, default) but HighHint
  touch on other app e.g. notification shade. The HighHint touch on
  notification shade should boost, while the game has frame rate
  override.

Bug: 372531483
Flag: EXEMPT bugfix
Test: Manual with game 30 Default and notification shade
Test: atest libsurfaceflinger_unittest
Change-Id: I4c85abe1aad053c3692ffad3e571d8a74ee02227