[clang] [clang-tools-extra] [clang][CodeComplete] skip explicit obj param in SignatureHelp (PR #146649)

[Mythreya Kuricheti via cfe-commits]

MythreyaK wrote:

> How does completion handle things like this?

@cor3ntin Oh I totally forgot about this! Thanks! I'll check it in the evening.

https://github.com/llvm/llvm-project/pull/146649