Make sure any relationships or links are ingested when consuming JSONL

[ml-evs]

Previously JSONL ingestions would not look for these keys when inserting into a db, but they should.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 90.66%. Comparing base (f71a1fb) to head (cfc3e7a).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
optimade/utils.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2212      +/-   ##
==========================================
- Coverage   90.69%   90.66%   -0.04%     
==========================================
  Files          75       75              
  Lines        4858     4862       +4     
==========================================
+ Hits         4406     4408       +2     
- Misses        452      454       +2     

Flag	Coverage Δ
project	90.66% <50.00%> (-0.04%)	⬇️
validator	90.66% <50.00%> (-0.04%)	⬇️

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