Includes a test fix for dEQP-VK.spirv_assembly.instruction.compute.hlsl_cases.cbuffer_packing

Bug: b/144183516
Bug: b/144306942
Change-Id: I3056837e2069841a465b8e4af12713b0a1995272
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/38508Tested-by: Chris Forbes <chrisforbes@google.com>
Presubmit-Ready: Chris Forbes <chrisforbes@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>