Replace the dead Vimeo video in the demo default content that fails media oEmbed validation on install

Problem/Motivation

The demo default content references an external Vimeo video (https://vimeo.com/76979871) that has been deleted and now returns 404. Media oEmbed validation fetches the URL when the demo content is imported during drush site:install, so the dead URL fails the whole install with "The provided URL does not represent a valid oEmbed resource". The install is at the mercy of a deleted third-party video.

Steps to reproduce

Install a site with the Varbase Media Demo default content (for example drush site:install with the demo recipe applied): the import of the two remote-video media entities fails oEmbed validation because https://vimeo.com/76979871 returns 404.

Proposed resolution

Point the two affected media entities (recipes/default/content/media/7f3ff6e7-51fe-419b-802b-1b12c8aab4e5.yml and recipes/default/content/media/bffb4783-482c-4766-b3cf-56d55e43e50d.yml) at a stable, long-lived Vimeo video (The Mountain, https://vimeo.com/22439234, published in 2011), keeping the demo’s Vimeo-provider example intact (field_provider stays vimeo).

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ❌ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ➖ UX/UI designer responsibilities
• ➖ Accessibility and Readability
• ❌ Reviewed by a human
• ❌ Code review by maintainers
• ❌ Full testing and approval
• ❌ Credit contributors
• ❌ Review with the product owner
• ❌ Update Release Notes
• ✅ Release varbase_media_demo-10.1.1, varbase_media_demo-10.0.11

User interface changes

• The two demo remote-video media items play a stable Vimeo sample video instead of the deleted one, keeping the Vimeo-provider demo coverage.

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Fixed the site install failing on the demo default content: the deleted external Vimeo video was replaced with a stable Vimeo sample video (The Mountain), so media oEmbed validation passes again.