[llvm] [SPIRV] Change how to detect OpenCL/Vulkan Env and update tests accordingly. (PR #129689)

[Dmitry Sidorov via llvm-commits]

https://github.com/MrSidims approved this pull request.

Thanks! I believe that this approach is good enough. Later some extra heuristics can be added, but first it seems like we need to modify clang to update triple for OpenCL.

https://github.com/llvm/llvm-project/pull/129689