tests(ui): adds teardown process for Install tests

[gnikit]

The mocking for UI tests is rather difficult to control. Notifications pop-up in all sorts of orders. This PR aims to somewhat help with that. We might have to edit how the assertions work to make this more robust.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (e4540f6) 83.64% compared to head (28042fe) 83.64%.

:exclamation: Current head 28042fe differs from pull request most recent head 717d511. Consider uploading reports for the commit 717d511 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1011 +/- ## ======================================= Coverage 83.64% 83.64% ======================================= Files 12 12 Lines 2311 2311 Branches 205 205 ======================================= Hits 1933 1933 Misses 373 373 Partials 5 5 ```

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