refactor(nuxt): remove `_registeredComponents` from ssrContext (#27819)

packages/nuxt/src/app/plugins/preload.server.ts

@@ -5,9 +5,9 @@ export default defineNuxtPlugin({
   setup (nuxtApp) {
     nuxtApp.vueApp.mixin({
       beforeCreate () {
-        const { _registeredComponents } = this.$nuxt.ssrContext
+        const { modules } = this.$nuxt.ssrContext
         const { __moduleIdentifier } = this.$options
-        _registeredComponents.add(__moduleIdentifier)
+        modules.add(__moduleIdentifier)
       },
     })
   },

packages/nuxt/src/core/runtime/nitro/renderer.ts

@@ -311,8 +311,6 @@ export default defineRenderHandler(async (event): Promise<Partial<RenderResponse
     payload: (ssrError ? { error: ssrError } : {}) as NuxtPayload,
     _payloadReducers: {},
     modules: new Set(),
-    set _registeredComponents (value) { this.modules = value },
-    get _registeredComponents () { return this.modules },
     islandContext,
   }