Dashboard metadata variant bugfix

[anthonylasso]

Description

This PR catches and warns the user when a default variant is not present in the variant list. The resource list will render and allow the user to continue to use the app (instead of a blank screen)

Bad response example

user warning

unit test

Type of change

Does this correspond to an open issue?

Select type(s) of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• [] My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have fixed any merge conflicts

[codecov]

Codecov Report

Merging #933 (29c5752) into main (8b73977) will decrease coverage by 19.83%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             main     #933       +/-   ##
===========================================
- Coverage   45.04%   25.22%   -19.83%     
===========================================
  Files         107       72       -35     
  Lines       19187    14153     -5034     
===========================================
- Hits         8643     3570     -5073     
- Misses       9934    10337      +403     
+ Partials      610      246      -364     

see 66 files with indirect coverage changes

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