chore: fix mongodb extractor test

[usefulalgorithm]

🤔 Why?

Some collections are causing mongoimport to run incompletely, thus making the test pipeline unstable.

🤓 What?

• Removed wacky test sample collections.
• Updated expected test file.

🧪 Tested?

Ran the test 5 times after the the new expected file was updated, does not seem flakey.

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
12809	11458	89%	85%	🟢

New Files

No new covered files...

Modified Files

No covered modified files...

updated for commit: 42e67a9 by action🐍

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.45%. Comparing base (576d867) to head (42e67a9).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #994   +/-   ##
=======================================
  Coverage   89.45%   89.45%           
=======================================
  Files         196      196           
  Lines       12809    12809           
=======================================
  Hits        11458    11458           
  Misses       1351     1351           

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