Merge pull request #12359 from arthurnn/inverse_on_callbacks

Make sure inverse_of is visible on the has_many callbacks
Conflicts:
	activerecord/CHANGELOG.md
	activerecord/test/models/company.rb

activerecord/lib/active_record/associations/has_many_association.rb

@@ -9,6 +9,7 @@ module ActiveRecord
 
       def insert_record(record, validate = true, raise = false)
         set_owner_attributes(record)
+        set_inverse_instance(record)
 
         if raise
           record.save!(:validate => validate)