Avoided error when using include query parameter on related urls

[sliverc]

Description of the Change

Using include on related urls always through an error even when correctly configured.
This is a regression of version 4.1.0.

Checklist

• PR only contains one change (considered splitting up PR)
• unit-test added
• documentation updated
• CHANGELOG.md updated (only for user relevant changes)
• author name in AUTHORS

[codecov]

Codecov Report

Merging #914 (a76396b) into master (36a60a3) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #914   +/-   ##
=======================================
  Coverage   97.67%   97.67%           
=======================================
  Files          58       58           
  Lines        3093     3102    +9     
=======================================
+ Hits         3021     3030    +9     
  Misses         72       72           

Impacted Files	Coverage Δ
example/tests/integration/test_browsable_api.py	100.00% <100.00%> (ø)
rest_framework_json_api/renderers.py	90.15% <100.00%> (+0.06%)	⬆️
tests/test_views.py	100.00% <0.00%> (ø)

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[n2ygk]

LGTM