[tests] Fix video player tests

[valfirst]

YouTube has started blocking video playback from tests with the message "Sign in to prove you're not a bot". VIVIDUS test site was updated to use custom video, the tests are updated accordingly.

[github-actions[bot]]

Qodana for JVM

It seems all right 👌

No new problems were found according to the checks applied

💡 Qodana analysis was run in the pull request mode: only the changed files were checked ☁️ View the detailed Qodana report

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.62%. Comparing base (adc9839) to head (0f93984).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5290 +/- ## ========================================= Coverage 97.62% 97.62% Complexity 6945 6945 ========================================= Files 959 959 Lines 20144 20144 Branches 1323 1323 ========================================= Hits 19666 19666 Misses 368 368 Partials 110 110 ```

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[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud