[clang][Interp][Test] Add test for llvm#97302

Fixes llvm#97302

Author: tbaederr

clang/test/AST/Interp/records.cpp

@@ -494,6 +494,12 @@ namespace DeclRefs {
   constexpr B b;
   static_assert(b.a.m == 100, "");
   static_assert(b.a.f == 100, "");
+
+  constexpr B b2;
+  static_assert(b2.a.m == 100, "");
+  static_assert(b2.a.f == 100, "");
+  static_assert(b2.a.f == 101, ""); // both-error {{failed}} \
+                                    // both-note {{evaluates to '100 == 101'}}
 }
 
 namespace PointerArith {