refactor: fix lint errors in tests (#11182)

## Summary

Fix tests failing lint

## Changes

- **What**:
- Fix relative imports
- Fix test not using comfyPage

## Review Focus

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<!-- If this PR fixes an issue, uncomment and update the line below -->
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## Screenshots (if applicable)

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┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-11182-refactor-fix-lint-errors-in-tests-3416d73d3650812fbf1bc88554c57de2)
by [Unito](https://www.unito.io)

browser_tests/fixtures/helpers/ExecutionHelper.ts

@@ -1,8 +1,8 @@
 import type { WebSocketRoute } from '@playwright/test'
 
 import type { RawJobListItem } from '@/platform/remote/comfyui/jobs/jobTypes'
-import type { ComfyPage } from '../ComfyPage'
-import { createMockJob } from './AssetsHelper'
+import type { ComfyPage } from '@e2e/fixtures/ComfyPage'
+import { createMockJob } from '@e2e/fixtures/helpers/AssetsHelper'
 
 /**
  * Helper for simulating prompt execution in e2e tests.