[SPIR-V] The Matrix Layout keywords fails to write matrix elements to out buffers

[farzonl]

Description
In pr llvm/offload-test-suite#1211 we are exercising the layout keywords for matrix types.
The results for spirv are rather suprising in that even though we are applying the layout decorators ( OpMemberDecorate %type_CBRM 0 ColMajor OpMemberDecorate %type_CBCM 0 RowMajor) we are seeing them impact storage by causing the writes not to happen see runs on
https://github.com/llvm/offload-test-suite/actions/runs/26302622697/job/77431356843?pr=1211

example spirv:
https://hlsl.godbolt.org/z/7hfTE6hss