[clang] [Sema] Substitute parameter packs when deduced from function arguments (PR #79371)

[Gábor Spaits via cfe-commits]

spaits wrote:

@cor3ntin I see that you have CI runs that fail with exactly the same reason as my runs: https://buildkite.com/llvm-project/clang-ci/builds/10874#018d49c2-1224-4939-9430-0e5a2be796a9 .

https://github.com/llvm/llvm-project/pull/79371