feat: populating navigation item related

[CodeVoyager]

Ticket

#501

Summary

Taking into account contentTypesPopulate when rendering navigation

Test Plan

• start the server
• set contentTypesPopulate field in navigation
• prepare internal content to have relational fields filled
• render a navigation
• navigation item's related field should be populated as expected

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.04%. Comparing base (f8d3fcd) to head (82f50fd).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #505   +/-   ##
=======================================
  Coverage   89.04%   89.04%           
=======================================
  Files          19       19           
  Lines         283      283           
  Branches       45       45           
=======================================
  Hits          252      252           
  Misses         30       30           
  Partials        1        1           

Flag	Coverage Δ
unittest	89.04% <ø> (ø)

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