[llvm] [CodeGen][X86] Fix lowering of tailcalls when `-ms-hotpatch` is used (PR #77245)

[Steven Noonan via llvm-commits]

tycho wrote:

I'm the original reporter to @MolecularMatters about the issue, and I've been running with the Live++ build flags in my project for the past 12 hours with the changes in this PR applied on top of 8fb8ad66c95a51b82e5c2876ed925b5512ce6b83 and it seems to be fine now without needing `-fno-optimize-sibling-calls`

https://github.com/llvm/llvm-project/pull/77245