[clang] [Clang][WebAssembly] Fix WASM tables to allow `__funcref` function pointers (PR #178720)

[Demetrius Kanios via cfe-commits]

QuantumSegfault wrote:

Oh! You already did it yourself @pmatos? I'll transfer those tests over.

But it probably makes sense to just close this one and have you merge in your version. You have a nicer commit message, and at this point it's you two (@vtjnash) who actually solved the problem XD

https://github.com/llvm/llvm-project/pull/178720