On Linux this test is supported with GLX but not EGL, so Ozone (which
uses EGL) fails. Update the test suppression to avoid Linux Ozone.

TBR=geofflang@chromium.org
Bug: angleproject:4725
Change-Id: I9e85b51a01ab5b25c6cbbdbcdbbfb4b21b7a6152
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2270021
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>