[clang] [clang][Sema] Add diagnostic note for reference of function-like macros requiring without parentheses (PR #123495)

[Aaron Ballman via cfe-commits]

================
@@ -2347,6 +2347,27 @@ Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK,
   return E;
 }
 
+// Check whether a similar function-like macro exists and suggest it
----------------
AaronBallman wrote:

```suggestion
// Diagnose when a macro cannot be expanded because it's a function-like macro
// being used as an object-like macro. Returns true if a diagnostic is emitted.
```

https://github.com/llvm/llvm-project/pull/123495