fix(test): e2e stability (#14749)

#### PR Dependency Tree


* **PR #14749** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Bug Fixes**
* Improved link preview reliability by updating request identification
to better match modern browsers.
* **Tests**
* Made end-to-end and integration tests deterministic and more robust,
improving AI chat, image generation, attachment handling, settings
visibility, and editor flows.
* **Chores**
* Updated underlying tooling versions to enhance stability and
compatibility.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tests/affine-cloud-copilot/e2e/settings/embedding.spec.ts

@@ -513,9 +513,9 @@ test.describe('AISettings/Embedding', () => {
     await utils.settings.openSettingsPanel(page);
     await page.context().setOffline(true);
     await utils.settings.ignoreDocForEmbedding(page, 'Test Doc', false);
-    await expect(
-      page.getByText(/Failed to update ignored docs/i)
-    ).toBeVisible();
+    await page
+      .getByText(/Failed to update ignored docs/i)
+      .waitFor({ state: 'visible', timeout: 20000 });
     await page.context().setOffline(false);
   });
 });