Skip crashing KHR tests on Nvidia Tests were previously disabled on Nvidia, but this was erroneously narrowed to Linux. Bug: angleproject:4128 Change-Id: I9b96e84341c7c3352eaefbba73fdc5b2c67a921e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1924791 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>