fix(aria): set radio buttons role as "radiogroup"

[henetiriki]

closes #3084

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[codecov-io]

Codecov Report

Merging #3085 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3085   +/-   ##
=======================================
  Coverage   92.27%   92.27%           
=======================================
  Files          91       91           
  Lines        3015     3015           
  Branches      485      485           
=======================================
  Hits         2782     2782           
  Misses        171      171           
  Partials       62       62

Flag	Coverage Δ
#e2e	60.69% <ø> (ø)	⬆️
#unit	90.76% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
src/buttons/radio.ts	95.08% <ø> (ø)	⬆️

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[maxokorokov]

LGTM, thanks!

Indeed looks like it should be radiogroup