[clang] [Clang][AST] Add Test Cases for Reference Qualifiers in Opr Overload (PR #102878)

[Yanzuo Liu via cfe-commits]

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@@ -54,4 +54,18 @@ struct B {
   void operator delete(void*) volatile; //expected-error {{static member function cannot have 'volatile' qualifier}}
   void operator delete[](void*) volatile; //expected-error {{static member function cannot have 'volatile' qualifier}}
 };
+
+struct C {
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zwuis wrote:

```suggestion
struct GH102422 {
```

https://github.com/llvm/llvm-project/pull/102878