Add missing images

[fblupi]

Include missing images that make the Webpacker compilation fail for the instances with this module.

See: https://github.com/AjuntamentdeBarcelona/decidim-barcelona/actions/runs/6390147345/job/17342805836

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (13cb664) 82.60% compared to head (3bd7393) 82.60%.

❗ Current head 3bd7393 differs from pull request most recent head 886e724. Consider uploading reports for the commit 886e724 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #36   +/-   ##
=======================================
  Coverage   82.60%   82.60%           
=======================================
  Files          28       28           
  Lines         460      460           
=======================================
  Hits          380      380           
  Misses         80       80           

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