[clang] [clang][CodeComplete] Recurse into the subexpression of deref operator in getApproximateType (PR #93404)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

(I'll merge it shortly if CI turns green because I encountered the bug the other day in our codebase. Apologies I didn't point it out in my review for https://github.com/llvm/llvm-project/commit/bc31be7949a3d5382be0e15e3957fa957da9de45)

https://github.com/llvm/llvm-project/pull/93404