IBX-11739: Added playwright tests for Trash

[pawlakadrian]

🎫 Issue	IBX-11739

Related PRs:

• IBX-11740: Added playwright-tests.yml commerce#1833
• IBX-11740: Added playwright-browser-tests.yml gh-workflows#100
• https://github.com/ibexa/cohesivo-playwright/pull/1

Description:

Sets up Playwright testing for the admin-ui package using the shared cohesivo-playwright library.

• Added tests/playwright-tests/ directory with playwright.config.ts, tsconfig.json, and package.json
• Added Trash.spec.ts with 6 tests covering: empty trash, move to trash, restore, restore under new location, delete from trash, and search
• Added .github/workflows/playwright-tests.yml calling the reusable workflow for all four editions (oss/headless/experience/commerce)

For QA:

Documentation:

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Security Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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