[BUG] AutoUpdater broken when UniGetUI is portable

### Please confirm these before moving forward

- [x] I have searched for my issue and have not found a work-in-progress/duplicate/resolved issue.
- [x] I have tested that this issue has not been fixed in the latest [(beta or stable) release](https://github.com/marticliment/WingetUI/releases/).
- [x] I have checked the [FAQ](https://github.com/marticliment/WingetUI#frequently-asked-questions) section for solutions.
- [x] This issue is about a bug (if it is not, please use the [correct template](https://github.com/marticliment/WingetUI/issues/new/choose)).

### UniGetUI Version

all

### Windows version, edition, and architecture

n/a

### Describe your issue

AutoUpdater does not install to portable location, and creates shortcuts+registry entries

### Steps to reproduce the issue

Install UniGetUI portable, and then wait for the updater to install a new version

### UniGetUI Log

```text
N/A
```

### Package Managers Logs

```text
N/A
```

### Relevant information

The solution is to, if unigetui is portable, add flags to the installer to a) point to the correct directory, and b) prevent shortcut and registry entries creation

### Screenshots and videos

_No response_