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**Related issue:** Resolves#43417
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
done in https://github.com/fleetdm/fleet/pull/42216
## Testing
- [X] Added/updated automated tests
- [X] QA'd all new/changed functionality manually
- Using a local fileserver, added the same software to two fleets and
ran `fleetctl gitops`. Verified that the first fleet downloaded the
file, the second fleet used the cache, and both fleet showed the
software installer in the UI.
## Summary by CodeRabbit
* **Chores**
* Updated software installer lookup mechanism to support optional
team-scoped searches, enabling fallback to cross-team installer cache
when team-specific installers are unavailable.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Scott Gress
91d9b25924