fix: add __moduleIdentifier for ssr _registeredComponents

[asthesky]

hi, is there any solution for SSR preload async components? maybe I didn't find it, and i find an crude method like this ,

      const { __moduleIdentifier } = this.$options;
     if (__moduleIdentifier) {
       const ctx = useSSRContext();
       ctx._registeredComponents.add(__moduleIdentifier);
     }

but this need add a moduleIdentifier, is there any suggestions and plans?