Use Array#wrap instead Array()

- since `Array()` calls `to_ary` or `to_a` on a subject
- the intent is to 'wrap' subject into an array

activerecord/lib/active_record/validations/presence.rb

@@ -5,7 +5,7 @@ def validate(record)
         super
         attributes.each do |attribute|
           next unless record.class.reflect_on_association(attribute)
-          associated_records = Array(record.send(attribute))
+          associated_records = Array.wrap(record.send(attribute))
 
           # Superclass validates presence. Ensure present records aren't about to be destroyed.
           if associated_records.present? && associated_records.all? { |r| r.marked_for_destruction? }