Remove empty content when at least one related resrouce exists.

[GretaD]

fixes #3758

while debugging, i realized that each panel updates the hasRelatedResources flag independently, which leads to an incorrect state if any panel sets it to true and then another sets it to false.

This fixup makes sure that hasRelatedResources becomes true if any of the panels have resources and remains true once it is set.

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (554b03a) 2.51% compared to head (45c7d93) 2.51%.
Report is 9 commits behind head on main.

Files	Patch %	Lines
src/components/ContactDetails.vue	0.00%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main   #3760      +/-   ##
========================================
- Coverage   2.51%   2.51%   -0.01%     
========================================
  Files         89      89              
  Lines       4409    4411       +2     
  Branches    1125    1126       +1     
========================================
  Hits         111     111              
- Misses      4178    4180       +2     
  Partials     120     120              

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[st3iny]

/backport to stable5.5