Fix SurfaceView window crop computation

1) Transform matrix is now computed in the right direction,
matches long-time computeCurrentTransform

2) The scaling on the SV side was incorrect, removed it

Bug: 298621623
Test: repro cases in b/313721727 & b/318611127
Flag: clip_surfaceviews

Change-Id: Ieef1aa2ec8564fe6150f27da4c1f35d84f9a71dc
2 files changed