docs: Button with icon add label

[SevereCloud]

• Fixes [Docs][a11y][Button]: Исправить примеры кнопок в Storybook #4929

[github-actions]

👀 Docs deployed

• ✅ Styleguide
• ✅ Storybook

Commit 7416b76

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.35%. Comparing base (8b9056b) to head (7416b76).
Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6697   +/-   ##
=======================================
  Coverage   82.35%   82.35%           
=======================================
  Files         335      335           
  Lines       10329    10330    +1     
  Branches     3460     3460           
=======================================
+ Hits         8506     8507    +1     
  Misses       1823     1823           

Flag	Coverage Δ
unittests	82.35% <ø> (+<0.01%)	⬆️

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