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

[Alexandre Ganea via llvm-commits]

aganea wrote:

Another thing that @sylvain-audi raised in a offline discussion, is that `PatchableFunction` pass adds a 16-byte alignement for every single function in the PE, which increased the size and is not required stricto sensu. It is only the usage of `/functionpadmin` linker option that does the extra padding at the begining of the function and could/should take this alignement decision.

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