[BUG] Service state change does not clean up .tmp files

[matKlju]

Bug description:

When an active service changes state (e.g., running → stopped, restarted, or crashes), related .tmp files are not deleted.
Temporary files remain on disk even though the service instance that created them is no longer active.

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Expected behavior:

• When a service transitions from draft state to active no temporary files should remain
• No orphaned temporary files remain after state transition.
• Cleanup should not affect unrelated or shared files.

[matKlju]

@matKlju Will have closer look to provide more context to @ruwinirathnamalala