fix: Support one-many self joins without primary directive

[AndrewSisley]

Relevant issue(s)

Resolves #2620

Description

Support one-many self joins without primary directive.

[fredcarle]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.78%. Comparing base (1f9c3ee) to head (4447999).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2799      +/-   ##
===========================================
- Coverage    78.85%   78.78%   -0.06%     
===========================================
  Files          315      315              
  Lines        23836    23836              
===========================================
- Hits         18794    18779      -15     
- Misses        3667     3678      +11     
- Partials      1375     1379       +4     

Flag	Coverage Δ
all-tests	78.78% <100.00%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
internal/request/graphql/schema/collection.go	90.35% <100.00%> (ø)

... and 7 files with indirect coverage changes

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