Fix error message

[StaehliJ]

Pull request

Description

The goal of this PR is to make test pass.

Changes made

• Change the mp4 video that doesn't work on every machine.
• Improve error message when media url fails.

Checklist

• Your branch has been rebased onto the main branch.
• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).
• All pull request status checks pass.

[github-actions]

Code Coverage

Overall Project	45.93%	🟢
Files changed	100%	🟢

Module	Coverage
:pillarbox-core-business	66.52%	🟢

Files

Module	File	Coverage
:pillarbox-core-business	SRGErrorMessageProvider.kt	100%	🟢