Tweak RescaleWithTransform test expectations

Bringing back the (lower precision) affine bitmap procs caused the CPU
backend to fail this test (slightly).

Bug: b/329003512
Change-Id: Ib449268dc55df60a5b31965d07df14aea977241f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/842241
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
1 file changed