For #7158: Improves home to search animation

[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.

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[codecov-io]

Codecov Report

Merging #9008 into master will increase coverage by 0.01%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##             master   #9008      +/-   ##
===========================================
+ Coverage     18.88%   18.9%   +0.01%     
  Complexity      502     502              
===========================================
  Files           330     330              
  Lines         13061   13047      -14     
  Branches       1727    1727              
===========================================
- Hits           2467    2466       -1     
+ Misses        10384   10371      -13     
  Partials        210     210

Impacted Files	Coverage Δ	Complexity Δ
.../java/org/mozilla/fenix/browser/BrowserFragment.kt	0% <ø> (ø)	0 <0> (ø)	⬇️
...c/main/java/org/mozilla/fenix/home/HomeFragment.kt	0% <0%> (ø)	0 <0> (ø)	⬇️
...in/java/org/mozilla/fenix/search/SearchFragment.kt	0% <0%> (ø)	0 <0> (ø)	⬇️
...ix/home/sessioncontrol/SessionControlController.kt	66.08% <0%> (-0.87%)	0% <0%> (ø)

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[severinrudie]

Code looks good. I like the animation too, happy to get this in.