[llvm] [WebAssembly] Define `__funcref_call_table` in generated asm and objects (PR #180900)

[Demetrius Kanios via llvm-commits]

QuantumSegfault wrote:

Follow up to the problems encountered during #162227

------

I have absolutely no idea if this is an appropriate fix...but it seems to work. Though this places the definition at the end of file when dumping assembly...there must be a better place for it.

------

Low priority I guess, since clearly nobody is using this broken feature. On the upside that means there's little resistance to changing it.

https://github.com/llvm/llvm-project/pull/180900