[clang] [Clang] Forward incoming Indirect parameters across musttail calls (PR #199351)

[Xavier Roche via cfe-commits]

xroche wrote:

@kiran-isaac, @efriedma-quic: this is the arg-side equivalent of your SRet musttail fix (a96c14eeb8fc / #104795). Same shape in EmitCall, applied to ABIArgInfo::Indirect call args.

Tests modeled on musttail-sret.cpp.

Reviewers welcome!

https://github.com/llvm/llvm-project/pull/199351