[clang] [SemaCXX] Qualified functions can't decay into pointers (PR #90353)

llvmbot wrote: @llvm/pr-subscribers-clang Author: Mital Ashok (MitalAshok) Changes Fixes #27059 Dependent function parameters, template parameters and exception declarations that have qualified function types now error instead of silently decaying into an invalid pointer type. Also

[clang] [SemaCXX] Qualified functions can't decay into pointers (PR #90353)

https://github.com/MitalAshok created https://github.com/llvm/llvm-project/pull/90353 Fixes #27059 Dependent function parameters, template parameters and exception declarations that have qualified function types now error instead of silently decaying into an invalid pointer type. Also fix