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]

Codecov Report

All modified and coverable lines are covered by tests ✅

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

❗ 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

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

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