fixes#31932
The problem here was that `hostInstalledSoftware` returns a slice of
pointers (`[]*hostSoftware`), so when iterating through and assigning
`LastOpenedAt` the original records were getting modified. This code
duplicates the records being put into `bySoftwareTitleID` so that the
records being stored in `bySoftwareID` are the original records.
As a side benefit to this I modified the logic to store the most recent
`LastOpenedAt` for the software title. I think we may be doing something
similar to this on the front end to show the "last used" column when we
have multiple version of a software installed. But this can potentially
be fetched from the API now.
- [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