Make `Lint/UselessAccessModifier` aware of `ActiveSupport::Concern` #402

Job	Run time
Check documentation syntax	32s
JRuby 9.4	2m 47s
Ruby 2.7	1m 7s
Ruby 3.0	48s
Check the oldest supported RuboCop version	57s
Prism	56s
Ruby 3.1	44s
Ruby 3.2	43s
Ruby 3.3	40s
Ruby head	40s
	9m 54s

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