<!-- Add the related story/sub-task/bug number, like Resolves#123, or
remove if NA -->
**Related issue:** Resolves#43142
Since script-only packages have to be specified as a path, add some
logic to allow icon to be set as a path in that situation.
# 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.
- [ ] 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.
- [ ] Timeouts are implemented and retries are limited to avoid infinite
loops
- [ ] If paths of existing endpoints are modified without backwards
compatibility, checked the frontend/CLI for any necessary changes
## Testing
- [x] Added/updated automated tests
- `TestSoftwarePackagesPathWithInline` checks custom package yml path so
there is no regression, added `TestScriptOnlyPackagesPathWithInline` to
test script-only package path.
- [ ] Where appropriate, [automated tests simulate multiple hosts and
test for host
isolation](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/reference/patterns-backend.md#unit-testing)
(updates to one hosts's records do not affect another)
- [x] QA'd all new/changed functionality manually
- Tested .sh and .ps1 script-only packages with icon path specified in
the team level yaml.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Fixed custom icon handling for script-only packages (e.g., .sh and
.ps1), allowing icons to be set and resolved correctly for packages
referenced by path.
* **Tests**
* Added test coverage validating custom icon functionality and path
resolution for script-only packages; included a sample script used by
the test.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
