test: Replaces weak locators in notification preferences test

[dougfabris]

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FLAKY-452

[dionisio-bot]

Looks like this PR is not ready to merge, because of the following issues:

• This PR is missing the 'stat: QA assured' label
• This PR is targeting the wrong base branch. It should target 7.6.0, but it targets 7.5.0

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[changeset-bot]

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Latest commit: 26056b4

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[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.72%. Comparing base (c21a7a6) to head (26056b4).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #35647   +/-   ##
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  Coverage    59.72%   59.72%           
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  Files         2829     2829           
  Lines        68230    68230           
  Branches     15124    15124           
========================================
  Hits         40748    40748           
  Misses       24874    24874           
  Partials      2608     2608           

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unit	75.92% <ø> (ø)

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