GL: Widen scope of disable_sync_control_support workaround. Crashes and hangs are still happening on Linux/Intel/Mesa 20. This should already not expose the OML_sync_control extension, so widen the scope of the workaround to see if there is an issue detecting Mesa version. Bug: chromium:1187475 Change-Id: I6397f459cd58dba449913ef1c7ce897e8a06cbd1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3022222 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>