[clang] [Clang][Sema] Preserve most derived array info across base class path entries. Add regression tests for primary and non primary base subobjects. (PR #223184)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

> @Fznamznon can i create another PR without using AI ? thanks.

Well I'm not sure what is the point? good first issues are to learn, the AI already shown you what to do.

https://github.com/llvm/llvm-project/pull/223184