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/utils/editor-utils.ts

@@ -575,7 +575,14 @@ export class EditorUtils {
       ),
       generateImage: this.createAction(page, async () => {
         await page.getByTestId('action-generate-image').click();
-        await page.keyboard.type('generate an image');
+        const input = page.locator(
+          'affine-ai-panel-widget .ai-panel-container textarea'
+        );
+        await input.waitFor({ state: 'visible' });
+        await input.fill('generate an image');
+        await page.getByTestId('ai-panel-input-send').waitFor({
+          state: 'visible',
+        });
         await page.getByTestId('ai-panel-input-send').click();
       }),
       generateCaption: this.createAction(page, () =>