Fix check system when module not loaded

[davidbeig]

As reported in #458 the check system page fails when the decidim-conferences module is not loaded in the application.

Since we have the hash of overriden files it was trying to load the module to check the md5 hash, but it failed since the module did not exist.

This change will only show the checks for the modules that have been loaded in the application. Maybe we want to change it so that it also shows modules that can be overriden by decidim-awesome but that are not inside the instance.

I would need some review on how to approach this @microstudi

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.68%. Comparing base (b284f28) to head (8fda508).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #467   +/-   ##
=======================================
  Coverage   96.68%   96.68%           
=======================================
  Files         157      157           
  Lines        4075     4076    +1     
=======================================
+ Hits         3940     3941    +1     
  Misses        135      135           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[microstudi]

An alternative could be just use rescue? or use the built in Decidim.module_installed?

or the underlying class:

next unless Decidim::DependencyResolver.instance.needed?(package)

[sdelcroix]

Is it possible to backport it to the release/0.29-stable branch ? :)

[microstudi]

Is it possible to backport it to the release/0.29-stable branch ? :)

Sure thing! done

[sdelcroix]

@microstudi Thank you very much !