Add unit tests for RadioButton and RadioButton.RadioButtonAccessibleObject

[Olina-Zhang]

Related #10453

Proposed changes

• Add unit test for RadioButton to test its property: CheckAlign
• Add unit test for RadioButton.RadioButtonAccessibleObject to test its properties: Name, KeyboardShortcut

Microsoft Reviewers: Open in CodeFlow

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.65341%. Comparing base (bb601b3) to head (26a652c).
Report is 5 commits behind head on main.

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main      #11687         +/-   ##
===================================================
+ Coverage   74.65248%   74.65341%   +0.00092%     
===================================================
  Files           3042        3042                 
  Lines         629821      629852         +31     
  Branches       46847       46846          -1     
===================================================
+ Hits          470177      470206         +29     
- Misses        156275      156280          +5     
+ Partials        3369        3366          -3     

Flag	Coverage Δ
Debug	74.65341% <100.00000%> (+0.00092%)	⬆️
integration	17.95959% <ø> (+0.01043%)	⬆️
production	47.64094% <ø> (-0.00346%)	⬇️
test	96.97864% <100.00000%> (+0.00039%)	⬆️
unit	44.68697% <ø> (-0.00397%)	⬇️

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