[llvm] [SimplifyCFG][swifterror] Don't sink calls with swifterror params (PR #139015)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

I think it might make sense to try to leverage the similarity between swifterror values and the `token` type.  The restrictions are basically the same; it can only be used by a specific set of instructions, and you aren't allowed to obscure a swifterror value.  And if the checks are unified, we never need to think about the semantics; you just always check for tokens and swifterror together.

https://github.com/llvm/llvm-project/pull/139015