When force-high-precision is enabled, change default precision

Change-Id: I7b033c891ee997f1ca022b73d6f78cc501c5cdc2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/424302
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2 files changed