Do not use transparent region hints to crop layers

Transparent region hints provided by ViewRootImpl maybe stale or
inaccurate. Specifically, ViewRootImpl only updates the transparent
region hints after a layout pass, it does not handle cases where
surfaceview might be rounded, or the SurfaceView is moved outside of
layout.

Using the region to crop layers might create artifacts on the screen.
Instead we limit the usage to remove the entire layer from the
composition list to avoid performance regressions when SurfaceView fills
the entire window.

Test: SurfaceView inside a scrollable view does not cause rendering artifacts
Bug: 428386342
Flag: com.android.graphics.surfaceflinger.flags.disable_transparent_region_hint
Change-Id: I29713070630e56a3bac761f7f7b89013c8043301