Avoid premature redraw of display cutout

This follows the concept of
I90451c14dc28daa3f90a74c3117548fead25af3f

ScreenDecorations should not request redraw by itself for
display change. It should draw by the request from window
manager, so the redrawn result can apply with display
projection change together.

This change avoids the premature path:
DisplayRepository onDisplayChanged
 > onFaceSensorLocationChanged
  > updateOverlayProviderViews
   > onReloadResAndMeasure
    > View#setLayoutParams
     > VRI#requestLayout
      > VRI#scheduleTraversals

Bug: 327693677
Test: atest ScreenDecorationsTest# \
            testUpdateOverlayProviderViews_PendingConfigChange
Test: Use Activity#setRequestedOrientation
      (display change event could arrive earlier from this path)
      to toggle orientation between
      SCREEN_ORIENTATION_LANDSCAPE and
      SCREEN_ORIENTATION_REVERSE_LANDSCAPE.
      The display cutout won't flicker on another side.
Flag: EXEMPT bugfix
Change-Id: I5d2c067c726281aa307b266c85bcb819be9d9079