[clang] [clang-tools-extra] [llvm] Add ``ignoringParenImpCasts`` in arguments of hasArgument (PR #89553)

[Julian Schmidt via cfe-commits]

5chmidti wrote:

Somehow I couldn't link that issue the normal way through the `Development` entry on the side, so I eddited in a `Fixed` message into the initial comment.

https://github.com/llvm/llvm-project/pull/89553