For #8800: clear menu highlights on use

[severinrudie]

Pull Request checklist

• Tests: This PR includes thorough tests or an explanation of why it does not
• Screenshots: This PR includes screenshots or GIFs of the changes made or an explanation of why it does not
• Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features. In addition, it includes a screenshot of a successful accessibility scan to ensure no new defects are added to the product.

After merge

• Milestone: Make sure issues finished by this pull request are added to the milestone of the version currently in development.

To download an APK when reviewing a PR:

1. click on Show All Checks,
2. click Details next to "Taskcluster (pull_request)" after it appears and then finishes with a green checkmark,
3. click on the "Fenix - assemble" task, then click "Run Artifacts".
4. the APK links should be on the left side of the screen, named for each CPU architecture

[codecov-io]

Codecov Report

Merging #8805 into master will increase coverage by 0.95%.
The diff coverage is 51.11%.

@@             Coverage Diff              @@
##             master    #8805      +/-   ##
============================================
+ Coverage     18.78%   19.73%   +0.95%     
- Complexity      502      514      +12     
============================================
  Files           331      331              
  Lines         13146    13177      +31     
  Branches       1737     1743       +6     
============================================
+ Hits           2469     2601     +132     
+ Misses        10468    10351     -117     
- Partials        209      225      +16

Impacted Files	Coverage Δ	Complexity Δ
...lla/fenix/components/toolbar/BrowserToolbarView.kt	0% <0%> (ø)	0 <0> (ø)	⬇️
.../src/main/java/org/mozilla/fenix/utils/Settings.kt	78.83% <100%> (+0.71%)	30 <0> (ø)	⬇️
...illa/fenix/components/toolbar/BrowserInteractor.kt	100% <100%> (ø)	7 <1> (+1)	⬆️
...lla/fenix/components/toolbar/DefaultToolbarMenu.kt	47.82% <40%> (+47.82%)	11 <8> (+11)	⬆️
...nix/components/toolbar/BrowserToolbarController.kt	64.44% <62.5%> (+2.23%)	0 <0> (ø)	⬇️
...mponents/searchengine/FenixSearchEngineProvider.kt	63.82% <0%> (-2.13%)	15% <0%> (ø)
...rg/mozilla/fenix/components/toolbar/ToolbarMenu.kt	100% <0%> (+4.34%)	0% <0%> (ø)	⬇️
.../main/java/org/mozilla/fenix/theme/ThemeManager.kt	10.81% <0%> (+10.81%)	0% <0%> (ø)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 709bf6f...16cc7f5. Read the comment docs.

[mcarare]

LGTM!