[PB-6531]: e2e coverage for same-name restore collisions

[terrerox]

Description

E2E tests for restoring same-name files from the trash into a folder that already has that name. They go through the real flow (Trash → select all → Restore → collision dialog) and then check what the user sees in the folder and in the trash.

• TC9 / TC10: keep both and replace with "apply to all".
• TC11: a file whose move fails stays in the trash.
• TC12 / TC13: resolving one by one (replace → replace, keep both → replace).

All of them fail without the fix in #2159.

The Drive mock now has a trash and keeps its state after moving or trashing a file, so the next listing sees the change.

Related Issues

Related Pull Requests

• Previous: [PB-6531]: resolve same-name items within a move collision batch #2159

Checklist

• Changes have been tested locally.
• Unit tests have been written or updated as necessary.
• The code adheres to the repository's coding standards.
• Relevant documentation has been added or updated.
• No new warnings or errors have been introduced.
• SonarCloud issues have been reviewed and addressed.
• QA Passed

Testing Process

[cloudflare-workers-and-pages]

Deploying drive-web with    Cloudflare Pages

Latest commit:	f549f92
Status:	✅  Deploy successful!
Preview URL:	https://9c431a35.drive-web.pages.dev
Branch Preview URL:	https://test-name-collision-same-nam.drive-web.pages.dev

View logs

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud