[clang] [WebAssembly] Change the default linker for `wasm32-wasip2` (PR #84569)

[Sam Clegg via cfe-commits]

sbc100 wrote:

I see, so `wasm-ld` builds "core module + metadata" and then `wasm-component-ld` takes that metadata and uses it to wrap the core module into a component (with exactly that one core module inside of it). 

So the core module + metadata is kind of isomorphic with that single-core-module-component?





https://github.com/llvm/llvm-project/pull/84569