🎲For #8212 - Fixes shadow/border when toolbar is on top

[boek]

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.

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[codecov-io]

Codecov Report

Merging #8234 into master will decrease coverage by 0.01%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             master    #8234      +/-   ##
============================================
- Coverage     18.67%   18.66%   -0.02%     
  Complexity      452      452              
============================================
  Files           316      316              
  Lines         12331    12339       +8     
  Branches       1619     1619              
============================================
  Hits           2303     2303              
- Misses         9829     9837       +8     
  Partials        199      199

Impacted Files	Coverage Δ	Complexity Δ
...c/main/java/org/mozilla/fenix/home/HomeFragment.kt	0% <0%> (ø)	0 <0> (ø)	⬇️

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[darkwing]

This works great for both top and bottom, and positions switch when changing settings! R+