bug: dynamic playlist runs even when Cantata is closed

[nullobsi]

System Details
OS: any

Describe the bug
Cantata's dynamic playlist script runs in the background even when Cantata is closed with no indiciation.

To Reproduce
Use dynamic playlist feature.

Expected behavior
Cantata is open -> Dynamic playlists running.
Cantata is closed -> Dynamic playlists not running.

Additional context
If Cantata is not running, all its relevant processes should also close.