[lld] [lld][WebAssembly] Convert pic-static test to assembly. NFC (PR #178321)

[Derek Schuff via llvm-commits]

https://github.com/dschuff approved this pull request.

LGTM. I assume we have codegen tests on the LLVM side that already cover the IR->asm transformation?

https://github.com/llvm/llvm-project/pull/178321