test(sbb-checkbox, sbb-toggle-check): stabilize tests with retries

[jeripeierSBB]

No description provided.

[kyubisation]

LGTM 👍
Can you maybe add a comment to explain why the retries are necessary, so in the future we can check whether they can be removed?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2518   +/-   ##
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  Coverage        ?   93.14%           
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  Files           ?      301           
  Lines           ?    24954           
  Branches        ?     2041           
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  Hits            ?    23244           
  Misses          ?     1681           
  Partials        ?       29           

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