Ensure Delete Expunge removes corresponding HFJ_RES_SEARCH_URL records for affected resources

[lukedegruchy]

• Add delete HFJ_RES_SEARCH_URL SQLs to the ones run by DeleteExpungeSvcImpl
• Add a foreign key to HFJ_RES_SEARCH_URL linking to HFJ_RESOURCE both in the entity definition and to the migration tasks
• Enhance existing tests to assert the new behaviour

Closes #5942

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.44%. Comparing base (497b9f2) to head (7031716).
Report is 67 commits behind head on master.

❗ Current head 7031716 differs from pull request most recent head 1adb64e

Please upload reports for the commit 1adb64e to get more accurate results.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5940      +/-   ##
============================================
+ Coverage     83.39%   83.44%   +0.04%     
- Complexity    26927    27087     +160     
============================================
  Files          1681     1692      +11     
  Lines        103965   104563     +598     
  Branches      13189    13235      +46     
============================================
+ Hits          86702    87250     +548     
- Misses        11613    11647      +34     
- Partials       5650     5666      +16     

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[michaelabuckley]

The migration + fk definition look good.
I question the need to keep both the id field and the entity field in the entity.