Include get_child_inlines() hook in stacked inline admin forms.

[bckohan]

Replaces #582

Fixes #576

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.57%. Comparing base (94267f3) to head (79cd97c).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #681      +/-   ##
==========================================
+ Coverage   75.53%   75.57%   +0.03%     
==========================================
  Files          21       21              
  Lines        1345     1347       +2     
  Branches      213      213              
==========================================
+ Hits         1016     1018       +2     
  Misses        257      257              
  Partials       72       72              

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[Copilot]

Pull request overview

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[piranna]

The class hierarchy walks as default fool proof default behavior are the main reason of my previous PR #582 that you've closed, since this one would surpass It. If you are not willing to have that default behavior and instead raise an exception if child_classes is not defined (that IMHO would make this class useless being used alone without inheriting It in another child one), then please reopen again my PR.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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