Remove redundant ELSE branch from the `ActiveRecord::Base.in_order_…

…of` SQL query

activerecord/lib/active_record/relation/query_methods.rb

@@ -1785,7 +1785,7 @@ def build_case_for_value_position(column, values)
           node.when(column.eq(value)).then(order)
         end
 
-        Arel::Nodes::Ascending.new(node.else(values.length + 1))
+        Arel::Nodes::Ascending.new(node)
       end
 
       def resolve_arel_attributes(attrs)