Snackbar position

[sblatz]

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 #9628 into master will decrease coverage by 0.10%.
The diff coverage is 4.91%.

@@             Coverage Diff              @@
##             master    #9628      +/-   ##
============================================
- Coverage     19.35%   19.25%   -0.11%     
  Complexity      519      519              
============================================
  Files           335      335              
  Lines         13486    13568      +82     
  Branches       1794     1794              
============================================
+ Hits           2610     2612       +2     
- Misses        10651    10731      +80     
  Partials        225      225              

Impacted Files	Coverage Δ	Complexity Δ
...c/main/java/org/mozilla/fenix/addons/Extensions.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...a/org/mozilla/fenix/browser/BaseBrowserFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
.../java/org/mozilla/fenix/browser/BrowserFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...org/mozilla/fenix/browser/FenixSnackbarDelegate.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...lla/fenix/components/toolbar/BrowserToolbarView.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...lla/fenix/customtabs/ExternalAppBrowserFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...c/main/java/org/mozilla/fenix/home/HomeFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
.../onboarding/OnboardingAutomaticSignInViewHolder.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ozilla/fenix/library/bookmarks/BookmarkFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...nix/library/bookmarks/edit/EditBookmarkFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
... and 13 more

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