[clang] [WebAssembly] Disable running `wasm-opt` on components (PR #98373)

[Quentin Michaud via cfe-commits]

mh4ck-Thales wrote:

Seems like bash is present on the GitHub Windows runners. I shouldn't be too hard to create a simple bash script that work both on Windows and Linux. It would add a new dependency for the test suite on Windows however (if bash is not already a dependency for Windows)

https://github.com/llvm/llvm-project/pull/98373