ci: Add storage name to run name for easier identification

[nickvergessen]

• Noticed in https://github.com/nextcloud/server/actions/runs/15394295923/job/43311057036?pr=48210 that it's annoying to find out quickly. You can look at the started container, but showing it directly is much better
• New run names in https://github.com/nextcloud/server/actions/runs/15398359761/job/43324696125?pr=53269

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)