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. In LayerRejector.cpp we have to be sure we are not just latching a buffer
   at the old size, which we still allow. This is the correct time to latch
   the transparentRegion as it is content dependent, but doesn't represent
   a size changing.

The difference between this and the original CL which was reverted has to do with
point 3. The original CL tried to solve point 3 by moving the latching logic from
the LayerRejecter in to Layer::doTransaction. However, in general doTransaction
will not be called in between Latching the buffer and drawing the frame, so this
introduced errors. The new test "FinalCropLatchingBufferOldSize" encapsulates this.

Bug: 37621737
Bug: 37531386
Test: Included in Transaction_test.cpp
Change-Id: I14bd09d01ac6b85895caa1b707d6fa7dac962074

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