[llvm] [CFI][LowerTypeTests] Fix indirect call with alias (PR #106185)

[Evgenii Stepanov via llvm-commits]

https://github.com/eugenis commented:

CFI-wise, this appears to be doing the right thing.
I'd appreciate it if someone took a second look at the rest of the change.

https://github.com/llvm/llvm-project/pull/106185