[clang] [clang][Sema] Handle pointer and reference type more robustly in HeuristicResolver::resolveMemberExpr() (PR #124451)

[kadir çetinkaya via cfe-commits]

kadircet wrote:

FWIW, i bisected a performance regression (and possibly an infinite loop) in clangd to this PR. trying to get a reproducer now.

https://github.com/llvm/llvm-project/pull/124451