[lld] [lld][WebAssembly] Match the ELF linker in transitioning away from archive indexes. (PR #78658)

[Sam Clegg via llvm-commits]

sbc100 wrote:

Thanks alex!

Just to confirm, when a file is referenced (i.e. pulled in from the archive) the custom section is included?  (IIRC maybe it just defaults to concatenation?)

https://github.com/llvm/llvm-project/pull/78658