fix: null ref in jwpltx crashing e2e tests

[dbudzins]

Description

Fixed a small race condition bug in jwpltx file that only usually happens in e2e tests

Steps completed:

According to our definition of done, I have completed the following steps:

• [ ] Acceptance criteria met
• [ ] Unit tests added
• [ ] Docs updated (including config and env variables)
• [ ] Translations added
• [ ] UX tested
• [ ] Browsers / platforms tested
• [ ] Rebased & ready to merge without conflicts
• [ ] Reviewed own code

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit ee24409):

https://ottwebapp--pr372-dbudzins-jwpltx-cras-22tin3co.web.app

_{(expires Thu, 19 Oct 2023 12:49:26 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: c198f8a3a199ba8747819f7f1e45cf602b777529}

[dbudzins]

Merged with test fixes: https://github.com/jwplayer/ott-web-app/pull/375