[clang] [Clang] Fix missing -Warray-bounds warning on member function calls. (PR #179647)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

> It's unfortunate that we weren't catching this before, but can we put the new behavior behind a new -Warray-bounds-member flag so we can disable it until all the instances are fixed?

@pjalwadi , will you be able to take a look?

https://github.com/llvm/llvm-project/pull/179647