Update codegen to use StateData (#51823)

Summary:
Pull Request resolved: #51823

Refactor C++ codegen to use StateData for simple codegenerated components

changelog: [internal] internal

Reviewed By: javache

Differential Revision: D75889787

fbshipit-source-id: 47edf5a2a7b7d0efa1f98d392b8c7457af5747c9

Author: mdvacca

packages/react-native-codegen/src/generators/components/GenerateStateH.js

@@ -33,6 +33,7 @@ const FileTemplate = ({
  */
 #pragma once
 
+#include <react/renderer/core/StateData.h>
 #ifdef RN_SERIALIZABLE_STATE
 #include <folly/dynamic.h>
 #endif
@@ -46,17 +47,7 @@ ${stateClasses}
 
 const StateTemplate = ({stateName}: {stateName: string}) =>
   `
-class ${stateName}State {
-public:
-  ${stateName}State() = default;
-
-#ifdef RN_SERIALIZABLE_STATE
-  ${stateName}State(${stateName}State const &previousState, folly::dynamic data){};
-  folly::dynamic getDynamic() const {
-    return {};
-  };
-#endif
-};
+using ${stateName}State = StateData;
 `.trim();
 
 module.exports = {