Displaying Active and Last Rolled Back Snapshots in FlowForge

### Description

Follow-up issue based on https://github.com/flowforge/flowforge/issues/2554

> There is no way to tell which snapshot is the current one for the instance or even the last one that was rolled back.

### User Story

As a FlowForge user,
I want to see which Snapshot is currently active and which one was last rolled back (for an Instance),
So that I have a better overview about what version is currently active and can manage my instances with more clarity and efficiency.

### Which customers would this be availble to

All Users, (CE)

### Acceptance Criteria

- [ ] Active Snapshot Indication: In the Snapshot Overview, there should be clear visual indicators identifying which Snapshot is currently active for the instance.
- [ ] Switch Indication After New Flow Deployment: If a new Flow is deployed to the instance after a Rollback (as recorded in the Audit log), the indication for the active Snapshot must switch to 'last rolled back'.

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate