wip: support dynamic import chunk

packages/vite/misc/rolldown-runtime.js

@@ -228,4 +228,13 @@ self.__rolldown_runtime = {
       }
     }
   },
+  /**
+   * @param {string} chunkName
+   */
+  async ensureChunk(chunkName) {
+    // TODO: chunk manifest? (need to inject from generateBundle?)
+    const chunkPath = chunkName
+    const data = await import(chunkPath)
+    Object.assign(this.moduleFactoryMap, data.default)
+  },
 }