KeyError on retrieving an ExtractionPipeline with partial contact information

[doctrino]

Description

Please describe the change you have made.

Checklist:

• Tests added/updated.
• Documentation updated. Documentation is generated from docstrings - these must be updated according to your change.
  If a new method has been added it should be referenced in cognite.rst in order to generate docs based on its docstring.
• Changelog updated in CHANGELOG.md.
• Version bumped. If triggering a new release is desired, bump the version number in _version.py and pyproject.toml per semantic versioning.

[erlendvollset]

Is this class used as both a read and write class? If only read, we don't really want the defaults.

[doctrino]

It is used for both.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.50%. Comparing base (688b956) to head (215890d).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2056      +/-   ##
==========================================
- Coverage   90.53%   90.50%   -0.04%     
==========================================
  Files         141      141              
  Lines       22491    22488       -3     
==========================================
- Hits        20363    20353      -10     
- Misses       2128     2135       +7     

Files with missing lines	Coverage Δ
cognite/client/_version.py	100.00% <100.00%> (ø)
cognite/client/data_classes/extractionpipelines.py	90.66% <100.00%> (-0.13%)	⬇️

... and 4 files with indirect coverage changes