fix(hooks): use uuid as pageId (#4658)

packages/frontend/hooks/src/use-block-suite-workspace-helper.ts

@@ -1,10 +1,14 @@
 import type { Page, Workspace } from '@blocksuite/store';
 import { useMemo } from 'react';
+import { v4 as uuid } from 'uuid';
 
 export function useBlockSuiteWorkspaceHelper(blockSuiteWorkspace: Workspace) {
   return useMemo(
     () => ({
       createPage: (pageId?: string): Page => {
+        if (!pageId) {
+          pageId = uuid();
+        }
         return blockSuiteWorkspace.createPage({ id: pageId });
       },
     }),