For #16745: Allow preference layout to increase height if needed.

[mcarare]

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.

before/ after :

->

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 #16752 (92bea30) into master (9cd2757) will increase coverage by 0.00%.
The diff coverage is 57.89%.

@@            Coverage Diff            @@
##             master   #16752   +/-   ##
=========================================
  Coverage     30.10%   30.10%           
- Complexity     1203     1206    +3     
=========================================
  Files           454      454           
  Lines         18542    18593   +51     
  Branches       2558     2564    +6     
=========================================
+ Hits           5582     5598   +16     
- Misses        12518    12553   +35     
  Partials        442      442           

Impacted Files	Coverage Δ	Complexity Δ
...nix/components/toolbar/BrowserToolbarController.kt	83.33% <ø> (-0.39%)	0.00 <0.00> (ø)
...c/main/java/org/mozilla/fenix/home/HomeFragment.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
...org/mozilla/fenix/tabtray/TabTrayDialogFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...a/org/mozilla/fenix/browser/BaseBrowserFragment.kt	9.64% <78.57%> (+1.67%)	11.00 <2.00> (+2.00)
...a/org/mozilla/gecko/search/SearchWidgetProvider.kt	24.00% <0.00%> (-11.14%)	1.00% <0.00%> (ø%)
...in/java/org/mozilla/fenix/settings/SupportUtils.kt	79.16% <0.00%> (+2.08%)	14.00% <0.00%> (+1.00%)

---

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 d49d710...92bea30. Read the comment docs.