[ENHANCEMENT] Sorting a column should keep a second-level sorting

### Please confirm these before moving forward.

- [X] I have searched for my feature proposal and have not found a work-in-progress/duplicate/resolved/discarded issue.
- [X] This improvement refers to an existing feature. If you want to suggest a new feature, please use [this template](https://github.com/marticliment/WingetUI/issues/new?assignees=marticliment&labels=new-feature&projects=&template=feature-request.yml&title=%5BFEATURE+REQUEST%5D+%28Enter+your+description+here%29).
- [X] This improvement is not a bug. If you want to report a bug, please use [this template](https://github.com/marticliment/WingetUI/issues/new?assignees=marticliment&labels=bug&projects=&template=bug-issue.yml&title=%5BBUG%5D+%28Enter+your+description+here%29).

### Describe the improvement

In the Software Updates tab, we can click on column names to sort by their elements, which is a great feature.
However, we should be able to keep a kind of second-level sorting.
For example, I click on "Source" so they're nicely sorted by source. But now they appear in a random order. Having them sorted by name inside their source categories could be a plus.

| Name | ... | Source |
| :---: | :---: | :---: |
| aiohttp | ... | Pip |
| setuptools | ... | Pip |
| Discord | ... | winget |
| Figma | ... | winget |
| Handbrake | ... | winget |
| Notepad++ | ... | winget |
| VLC | ... | winget |

in this example, they are sorted by Source as we clicked on it but also sub-sorted by name.
What 2nd level sorting to use ?
Package name or package ID could be a good idea if the user sorts by Source Or Version/New version. Or the last clicked column (which would be Package name by default), idk

### Describe how this improvement could help users

This would make the list of apps more easier to read. also I feel this should affect only the Software Updates tab, as the others seems to keep an order on the Package name when we sort by Source