test(infinite): disable flaky test when running in CI (#30264)

Issue number: N/A

---------

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## What is the current behavior?
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Test is flaky with Safari but only on CI.

## What is the new behavior?
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this PR. -->

- Disabled test for now

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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core/src/components/infinite-scroll/test/top/infinite-scroll.e2e.ts

@@ -3,7 +3,10 @@ import { configs, test } from '@utils/test/playwright';
 
 configs({ modes: ['md'], directions: ['ltr'] }).forEach(({ title, config }) => {
   test.describe(title('infinite-scroll: top'), () => {
-    test('should load more items when scrolled to the top', async ({ page }) => {
+    test('should load more items when scrolled to the top', async ({ page, skip }) => {
+      // TODO(FW-6394): remove once flaky issue is resolved
+      skip.browser('webkit', 'Safari is flaky on CI');
+
       await page.goto('/src/components/infinite-scroll/test/top', config);
 
       const ionInfiniteComplete = await page.spyOnEvent('ionInfiniteComplete');