fix(app): Fix component crash in validation.errors check

[nellh]

It's possible to run into this crash with a mix of legacy and schema validator datasets in your my datasets page results.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 46.95%. Comparing base (e0efa83) to head (3b6074d).
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
...ro-components/src/search-page/SearchResultItem.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3360      +/-   ##
==========================================
- Coverage   47.03%   46.95%   -0.09%     
==========================================
  Files         600      601       +1     
  Lines       38540    38606      +66     
  Branches     1266     1267       +1     
==========================================
  Hits        18127    18127              
- Misses      20222    20287      +65     
- Partials      191      192       +1     

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