feat: add preloading template (#2655)

Co-authored-by: Himself65 <himself65@outlook.com>

tests/parallels/drag-page-to-trash-folder.spec.ts

@@ -2,7 +2,7 @@ import { test } from '@affine-test/kit/playwright';
 import { expect } from '@playwright/test';
 
 import { openHomePage } from '../libs/load-page';
-import { waitMarkdownImported } from '../libs/page-logic';
+import { waitEditorLoad } from '../libs/page-logic';
 
 test('drag a page from "All pages" list onto the "Trash" folder in the sidebar to move it to trash list', async ({
   page,
@@ -11,7 +11,7 @@ test('drag a page from "All pages" list onto the "Trash" folder in the sidebar t
   // Init test db with known workspaces and open "All Pages" page via url directly
   {
     await openHomePage(page);
-    await waitMarkdownImported(page);
+    await waitEditorLoad(page);
     await page.getByText('All Pages').click();
   }