Fixes: #31581
Undo changes to defFilter, they weren't necessary
Add unit test for team_id=0
# Checklist for submitter
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
Closes#31581
Note:
- When no team id is provided it lists all installers, but they don't
have software_package fielded. I don't know if this is the intended
behavior or not.
# 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`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
For #26375.
When listing software titles for 'All teams', do not join against
software installers nor vpps to avoid duplicates.
Since filters related to software installers/VPP apps are no longer used
when viewing titles for 'All teams', the filter dropdown is disabled if
'All teams' is selected.
