feat: seperate createDoc and createStore (#11182)

blocksuite/playground/apps/starter/utils/collection.ts

@@ -66,8 +66,8 @@ export function createStarterDocCollection() {
     schema,
     blobCRUD: collection.blobSync,
     docCRUD: {
-      create: (id: string) => collection.createDoc({ id }),
-      get: (id: string) => collection.getDoc(id),
+      create: (id: string) => collection.createDoc(id).getStore({ id }),
+      get: (id: string) => collection.getDoc(id)?.getStore({ id }) ?? null,
       delete: (id: string) => collection.removeDoc(id),
     },
   });