Disable compute tests on Vulkan that cause SPIR-V validation errors

* SPIR-V validation update (https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools/+/b095f36a5b025e8618d3e7005b928ea63f0d301d) now leads to an error on these existing Compute tests which is blocking the VkDeps roll. This CL skips these tests on Vulkan.

* Reference 2 new bugs that capture work to get these tests re-enabled: b/404249988: Add WorkgroupMemoryExplicitLayoutKHR SPIR-V capability declaration and enable these tests when present
and
b/404250675: Add workaround / alternate SkSL for when WorkgroupMemoryExplicitLayoutKHR is not supported and re-enable these tests in all circumstances

Change-Id: Ic795378a6c75f1e126c1a3a6bf642fd53ae84145
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/965656
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Nicolette Prevost <nicolettep@google.com>
2 files changed