SurfaceFlinger: setGeometryAppliesWithResize crop latching fixes.

The same sort of thing we had with setPosition...not sure why I didn't
realize we would need the fixes here too! In particular we need to ensure
the following scenarios work:

1. Additional calls to set(Final)Crop while in the setGeometryAppliesWithResize
   state are eventually applied.
2. Additional calls to set(Final)Crop while in the setGeometryAppliesWithResize
   state are not immediately applied.
3. When we latch the buffer completing the resize...current hasn't been swapped
   to drawing...which means our location in LayerRejector.cpp was the wrong
   place to update the crop. This raises questions about whether the
   Transparent region latching works.

Bug: 37531386
Test: Included in Transaction_test.
Change-Id: I5140d44fd5e591a4afe5bddc201db45f7bcb5674