WIP: Fixes twitch panel

[NejcZdovc]

Resolves brave/brave-browser#3590
Resolves brave/brave-browser#3417

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Verified that these changes build without errors on
  • Windows
  • macOS
  • Linux
• Verified that these changes pass automated tests (npm test brave_unit_tests && npm test brave_browser_tests) on
  • Windows
  • macOS
  • Linux
• Verified that all lint errors/warnings are resolved (npm run lint)
• Ran git rebase master (if needed).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed.
• Add appropriate QA labels (QA/Yes or QA/No) to include the closed issue in milestone

Test Plan:

• Enable Rewards
• Visit a twitch streamer (twitch.tv/jenoki works if you want a verified one)
• Even if user is streaming, play a VOD.
• After the video has been playing for a few seconds, open the panel.
• Make sure that you see publisher in the panel

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions
• Verify test plan is specified in PR before merging to source

[jasonrsadler]

1. Enable Rewards
2. Go to twitch VOD
3. Play video and open panel and let publisher display
4. Refresh page and quickly open panel and leave open.

The publisher will display while the reload is in progress. When the user's icon loads on the page, the panel switches to 'twitch.tv'

[NejcZdovc]

@jasonrsadler can you please re-test this one. I can't reproduce quick open problem. If the problem is only for quick opens, let's merge this one and create new issue for it. Thank you

for quick open we can create new issue

[jasonrsadler]

Wrong publisher is getting shown. STR:

1. Enable Rewards. Go to Twitch
2. View a publisher VOD. Open panel to see publisher.
3. Go to a different live streamer, and before clicking panel, click on videos to go to video list.
4. Click on panel.
   Observe previous publisher from VOD is shown.

[NejcZdovc]

stale