[random test failure] Drupal\Tests\media\FunctionalJavascript\MediaSourceFileTest

Problem/Motivation

See 📌 Skip Drupal\Tests\media\FunctionalJavascript\MediaSourceFileTest Fixed we need to fix the test before it can be re-enabled.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet