[Feature Request] Make multiple document versions visible at a glance

Description Currently, in Paperless-ngx v3, it is not immediately apparent whether a document has multiple versions. The “Versions” button looks the same regardless of whether the document has only one version or several versions. As a result, users have to open the “Versions” menu first to find out whether additional versions exist. It would be helpful to visually distinguish the “Versions” button when multiple versions are available. For example: • Display the number of available versions directly on the button, e.g. “Versions 3” • Alternatively, use a subtle visual indicator such as a badge or dot • The icon could also be changed when multiple versions exist Example: [ 📄 Versions ③ ▼ ] This would make it immediately clear from the document view that additional versions are available, without requiring the user to open the menu. In my opinion, displaying the number of versions would be the clearest solution, as it directly tells the user …