Extract radio group logic into helper

[NotWoods]

This helps remove code dedicated to combining radio buttons

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-commenter]

Codecov Report

Merging #11493 into master will decrease coverage by 1.22%.
The diff coverage is 14.28%.

@@             Coverage Diff              @@
##             master   #11493      +/-   ##
============================================
- Coverage     22.12%   20.90%   -1.23%     
+ Complexity      725      681      -44     
============================================
  Files           377      374       -3     
  Lines         15098    15033      -65     
  Branches       1957     2034      +77     
============================================
- Hits           3341     3142     -199     
- Misses        11469    11607     +138     
+ Partials        288      284       -4     

Impacted Files	Coverage Δ	Complexity Δ
...sessioncontrol/viewholders/CollectionViewHolder.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
...ncontrol/viewholders/NoContentMessageViewHolder.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
...oncontrol/viewholders/TabInCollectionViewHolder.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
...ders/onboarding/OnboardingThemePickerViewHolder.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...rding/OnboardingToolbarPositionPickerViewHolder.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...boarding/OnboardingTrackingProtectionViewHolder.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...trol/viewholders/topsites/TopSiteItemViewHolder.kt	0.00% <ø> (ø)	0.00 <0.00> (ø)
.../mozilla/fenix/onboarding/OnboardingRadioButton.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...rg/mozilla/fenix/settings/CustomizationFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...rg/mozilla/fenix/settings/RadioButtonPreference.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
... and 80 more

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[ekager]

This is great!