When using the `fleet/software/batch` endpoint, due to its async nature,
it should return a 202 (Accepted) rather than a 200 (Ok).
https://github.com/fleetdm/fleet/issues/23492
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
<!-- Note that API documentation changes are now addressed by the
product design team. -->
- [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/Committing-Changes.md#changes-files)
for more information.
- [x] Added/updated tests
- [x] Manual QA for all new/changed functionality
