[clang] [OpenMP] Silencly accept `neon_vector_type` for the offloading device (PR #127439)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

The test you added doesn't seem to pass. You can run it locally with `llvm-lit /path/to/your/test -v`.

https://github.com/llvm/llvm-project/pull/127439