Enable KHR-NoContext* and KHR-Single* tests on Linux Nvidia Bug: angleproject:40644911 Change-Id: I9a37aa742cc8af237d653535e51439b899757aaf Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6005396 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Yuxin Hu <yuxinhu@google.com>