incorrect_dependent_option: Fix infinite recursion when association of the same class as model class

[fatkodima]

incorrect_dependent_options produces an infinite recursion and stack overflow when there is a :cascade foreign key and the association is of the same class as the owner model (for example, parent-child relationships).

[Copilot]

Pull Request Overview

This PR fixes an infinite recursion issue in the incorrect_dependent_option detector that occurs when analyzing associations between models of the same class (e.g., parent-child relationships) with cascade foreign keys.

• Adds a processing_list parameter to track models being processed to prevent infinite recursion
• Implements early return when a model is already being processed in the recursive chain
• Adds test coverage for the specific scenario of same-class associations with cascade foreign keys

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
lib/active_record_doctor/detectors/incorrect_dependent_option.rb	Modifies deletable? method to accept and use a processing list to prevent infinite recursion
test/active_record_doctor/detectors/incorrect_dependent_option_test.rb	Adds test case for same-class associations with cascade foreign keys

[gregnavis]

See https://github.com/gregnavis/active_record_doctor/pull/194/files#r2254948871