[clang] [clang] Implement -fptrauth-auth-traps. (PR #102417)

[Anton Korobeynikov via cfe-commits]

asl wrote:

> Failed to cherry-pick: [d179acd](https://github.com/llvm/llvm-project/commit/d179acd0484bac30c5ebbbed4d29a4734d92ac93)
> 
> https://github.com/llvm/llvm-project/actions/runs/10324823761
> 
> Please manually backport the fix and push it to your github fork. Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

Depends on https://github.com/llvm/llvm-project/pull/102670

https://github.com/llvm/llvm-project/pull/102417