feat(FR-1329): add a github action for regression test

[nowgnuesLee]

Add E2E Testing with Playwright for CI

This PR adds end-to-end testing capabilities using Playwright that run automatically on pull requests. The implementation:

• Creates a new GitHub workflow for running Playwright tests against different LTS versions
• Enhances the login utility to support different sign-in modes
• Configures Playwright to work properly in CI environments
• Adds a helper function to switch between IAM and ID sign-in modes
• Updates the login component with a data-testid attribute for better test targeting
• Adjusts timeout and reporter settings for CI compatibility

Checklist:

• Documentation
• Minium required manager version
• Specific setting for review (eg., KB link, endpoint or how to setup)
• Minimum requirements to check during review
• Test case(s) to demonstrate the difference of before/after

[nowgnuesLee]

• feat(FR-1329): add a github action for regression test #4428 👈 (View in Graphite)
• main

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