[classes] Make sure parent classes are never turned to setup mode

It doesn't make sense in general and moreover an attempt to do so might
cause hard stack overflow.

Bug: v8:11317
Change-Id: I2a6bbadba1ebc5c1496660c734df76a13600edac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2643389Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72275}

src/runtime/runtime-classes.cc

@@ -559,6 +559,8 @@ bool InitClassConstructor(
     // Set map's prototype without enabling prototype setup mode for superclass
     // because it does not make sense.
     Map::SetPrototype(isolate, map, constructor_parent, false);
+    // Ensure that setup mode will never be enabled for superclass.
+    JSObject::MakePrototypesFast(constructor_parent, kStartAtReceiver, isolate);
   }
 
   Handle<NumberDictionary> elements_dictionary_template(