**Related issue:** Resolves#48309
Deleting a Fleet-maintained app from a team now also deletes its
`software_title_team_pins` row. Previously the pin survived the delete
(the FK cascades only on title deletion, and the title row outlives the
installer rows), so re-adding the app resurfaced a stale pin pointing at
a version no longer cached.
# Checklist for submitter
- [x] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements), JS
inline code is prevented especially for url redirects, and untrusted
data interpolated into shell scripts/commands is validated against shell
metacharacters.
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
Carlo
d5afa45efd