GraphiteDawn: cache single texture bind group Bug: b/260368758 Change-Id: Iafc8c340b37feb8cb184f9da9878f9190b3213bc Reviewed-on: https://skia-review.googlesource.com/c/skia/+/780956 Reviewed-by: Michael Ludwig <michaelludwig@google.com> Commit-Queue: Quyen Le <lehoangquyen@chromium.org>