[clang] [Clang][Sema] Use the correct lookup context when building overloaded 'operator->' in the current instantiation (PR #104458)

[Florian Hahn via cfe-commits]

fhahn wrote:

I am also seeing assertions triggered when building LLVM `Assertion failed: (BaseType->isDependentType()), function ActOnStartCXXMemberReference, file SemaExprCXX.cpp, line 8009.`




https://github.com/llvm/llvm-project/pull/104458