♿ [#2955] A11y: Remove B-tags if they are used for styling

[jiromaykin]

B-tags should not be used, usually these need to be replaced with a STRONG tag or a correct styling class.
Screen-reader software responds differently to B-tags and Strong tags so they are more than just a 'style' and have a difference in meaning.
Issue: https://taiga.maykinmedia.nl/project/open-inwoner/task/2955

Also: it is NOT allowed to use H2 headings if that heading has no paragraph and doesn't actually summarize any content - for accessibility software Headings have a specific meaning and are read out loud as a list with nested hierarchy.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.23%. Comparing base (ccc2b8f) to head (4e4196d).
Report is 5 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1566   +/-   ##
========================================
  Coverage    94.23%   94.23%           
========================================
  Files         1068     1068           
  Lines        39403    39403           
========================================
  Hits         37131    37131           
  Misses        2272     2272           

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