[clang] [llvm] [Clang][LLVM] Disable NonLazyBind when pointer authentication is enabled (PR #188638)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

> > Are you planning to add code to reject nonlazybind in the backend in this patch?
> 
> Unless I misunderstood, I believe I already did so in [bde6719](https://github.com/llvm/llvm-project/commit/bde6719d9d8ea7b3c19c0a6ae7d271615d48cbb7)

It looks like that's silently suppressing the nonlazybind attribute.

https://github.com/llvm/llvm-project/pull/188638