SurfaceFlinger: recompute visible regions more

This change makes a change in the crop, scaling mode, transform, or buffer
dimensions trigger a recomputation of the visible regions of a window.  With
the new cropping behavior for SCALING_MODE_FREEZE all of these can now affect
the visible region.

Bug: 6470541
Change-Id: I1904e47efbd708e28bf189f637d24dbef65cd41e