Enable StructFieldNoFolding test.

This doesn't work on Nvidia's desktop Linux drivers, probably due to the
same root cause as skia:13035. (Reported the bug to Khronos at
https://gitlab.khronos.org/Tracker/vk-gl-cts/-/issues/3748)

Change-Id: Iafe73df72e175f5ccb6f4663e5b102fe7efaf57c
Bug: skia:13395
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/547443
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
3 files changed