[clang] [clang-cl] Fix value of __FUNCTION__ in MSVC mode. (PR #84014)

[via cfe-commits]

================
@@ -2260,10 +2271,15 @@ printTo(raw_ostream &OS, ArrayRef<TA> Args, const PrintingPolicy &Policy,
     } else {
       if (!FirstArg)
         OS << Comma;
-      // Tries to print the argument with location info if exists.
-      printArgument(Arg, Policy, ArgOS,
-                    TemplateParameterList::shouldIncludeTypeForArgument(
-                        Policy, TPL, ParmIndex));
+      if (!Policy.SuppressTagKeyword &&
+          Argument.getKind() == TemplateArgument::Type &&
+          isa<TagType>(Argument.getAsType()))
+        OS << Argument.getAsType().getAsString().data();
----------------
Sirraide wrote:

```suggestion
        OS << Argument.getAsType().getAsString();
```

https://github.com/llvm/llvm-project/pull/84014