Use public_send instead since respond_to? doesn't include private/protected methods by default

Co-Authored-By: Ndylanahsmith <dylan.smith@shopify.com>

activerecord/lib/active_record/relation/predicate_builder.rb

@@ -93,7 +93,7 @@ def expand_from_hash(attributes)
             if mapping.length == 1
               column_name, aggr_attr = mapping.first
               values = Array.wrap(value).map do |object|
-                object.respond_to?(aggr_attr) ? object.send(aggr_attr) : object
+                object.respond_to?(aggr_attr) ? object.public_send(aggr_attr) : object
               end
               build(table.arel_attribute(column_name), values)
             else