Fix Sinope clusters blocking some attribute updates

[TheJulianJES]

Proposed change

This fixes an issue where other attributes on the custom Sinope clusters were not updating.
Tests are also added to verify this is working.

Additional information

I'm not sure if other attributes are actually used though, but we should still fix it.

Checklist

• The changes are tested and work correctly
• pre-commit checks pass / the code has been formatted using Black
• Tests have been added to verify that the new code works

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (729bffd) 87.58% compared to head (928218b) 87.58%.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #2930   +/-   ##
=======================================
  Coverage   87.58%   87.58%           
=======================================
  Files         294      294           
  Lines        9010     9012    +2     
=======================================
+ Hits         7891     7893    +2     
  Misses       1119     1119           

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