[stable6.0] fix: meeting proposals participant no reponse

[backportbot]

Backport of PR #7396

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 13.68%. Comparing base (977d46d) to head (ae0bcba).
⚠️ Report is 3 commits behind head on stable6.0.

Files with missing lines	Patch %	Lines
src/components/Proposal/ProposalResponseMatrix.vue	0.00%	3 Missing ⚠️
src/views/Proposal/ProposalEditor.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##           stable6.0    #7458      +/-   ##
=============================================
- Coverage      13.68%   13.68%   -0.01%     
=============================================
  Files            218      218              
  Lines          11173    11176       +3     
  Branches        2697     2697              
=============================================
  Hits            1529     1529              
- Misses          9294     9297       +3     
  Partials         350      350              

Flag	Coverage Δ
javascript	13.68% <0.00%> (-0.01%)	⬇️

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