[graphite] Enable depth & stencil formats' support in DawnCaps

Bug: b/265131638
Change-Id: I21e4532fb384c3729697b014884bfd6b66dc39e4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/628776
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Nicolette Prevost <nicolettep@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2 files changed