Bug: `workshop_unmount` only applies for the current game session

[LambdaCore21]

Describe the bug

Upon next game launch everything is mounted again.

To Reproduce

1. Subscribe to workshop item
2. Launch P2CE and use workshop_mount
3. Enjoy the custom content
4. workshop_unmount the addon and exit P2CE
5. Upon next game launch everything is mounted again

Issue Map

Not map related

Expected Behavior

P2CE should always know the last status of an addon (mounted or unmounted) and save it for the next game launch

Operating System

No response