Fix TurboCxxModules::get

Summary: Make `TurboCxxModule::get` return `undefined` when trying to access methods that don't exist. This is what `TurboModule::get` does. So, it makes sense that this behaviour is preserved in TurboCxxModule.

Reviewed By: mdvacca

Differential Revision: D15780044

fbshipit-source-id: 13aeae081655735ef634f1dc09c0dc70a3a3a893

ReactCommon/turbomodule/core/TurboCxxModule.cpp

@@ -68,7 +68,7 @@ jsi::Value TurboCxxModule::get(jsi::Runtime& runtime, const jsi::PropNameID& pro
     }
   }
 
-  throw std::runtime_error("Function '" + propNameUtf8 + "' cannot be found on cxxmodule: " + name_);
+  return jsi::Value::undefined();
 }
 
 jsi::Value TurboCxxModule::invokeMethod(