[JENKINS-74963]: handle case where SELECT is still not visible/presen…

[kinow]

…t in DOM, prevent a null error, add better/more logging, use eval-source-map for webpack

Testing done

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[kinow]

Pending to check if I can write a test for this, and perhaps if a user could ask help review this by either reviewing the code and/or testing the fix.