Skip WebGL conformance/programs/program-test.html on all platforms

To unblock ANGLE CL http://crrev.com/c/3140496, which modifies behaviour
to make it an error to draw after the current program fails to re-link.

Bug: 1241123
Bug: angleproject:6358
Change-Id: I40a1f4843f902533745cc9527379def9d777a578
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3140226
Auto-Submit: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#918281}