[e2e] Investigate performance issues

[tanner-ricks]

Adjusted timeouts to make e2e tests run consistently with up to 4 workers.

Changes

• Added explicit timeouts to the playwright configuration
  • Test Suite Timeout of 1 Hour
  • Individual Test Timeout of 5 Minutes
  • Expect Timeout of 60 Seconds
• Removed individual expect timeouts from tests
• Removed test.slow calls
• Removed test.setTimeout calls
• Created functions for clicking the 'continue' and 'continue to next step' buttons
  • Allowed the continue to next function to explicitly wait before clicking the button
  • This was a large part of the fix and as such these functions should be used in the future
• Replaced all instances of clicking 'Continue' and 'Continue to next step' buttons with the new functions

How to test this PR

1. Pull the branch
2. Restart the stack if necessary
3. From within the sbl-frontend directory run the following command: yarn playwright test --ui --workers 4
4. In the Playwright UI that appears run all of the tests together
5. Verify that all tests pass
6. Run them all again
7. Verify that they all still pass

Screen shots