perf(ui/radio): add class and call function

[jiechen66]

Checklist

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• Fix linting errors
• Tests have been added / updated (or snapshots)

Change information

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[github-actions]

[codecov-commenter]

Codecov Report

Merging #389 (322c87e) into dev (799ba2d) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev     #389   +/-   ##
=======================================
  Coverage   96.43%   96.43%           
=======================================
  Files         209      209           
  Lines        4959     4962    +3     
  Branches     1015      997   -18     
=======================================
+ Hits         4782     4785    +3     
  Misses        173      173           
  Partials        4        4           

Impacted Files	Coverage Δ
...ges/varlet-ui/src/checkbox-group/CheckboxGroup.vue	98.43% <100.00%> (+0.02%)	⬆️
packages/varlet-ui/src/checkbox/Checkbox.vue	100.00% <100.00%> (ø)
packages/varlet-ui/src/radio/Radio.vue	100.00% <100.00%> (ø)

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