Avoid using try to handle radically different types

It's less error prone to be more deliberate about casting.

Author: byroot

activerecord/lib/active_record/relation/query_methods.rb

@@ -1910,15 +1910,19 @@ def build_with_value_from_hash(hash)
         end
       end
 
-      def build_with_expression_from_value(value)
+      def build_with_expression_from_value(value, nested = false)
         case value
         when Arel::Nodes::SqlLiteral then Arel::Nodes::Grouping.new(value)
-        when ActiveRecord::Relation then value.arel
+        when ActiveRecord::Relation
+          if nested
+            value.arel.ast
+          else
+            value.arel
+          end
         when Arel::SelectManager then value
         when Array
           parts = value.map do |query|
-            with_expression = build_with_expression_from_value(query)
-            with_expression.try(:ast) || with_expression
+            build_with_expression_from_value(query, true)
           end
 
           parts.reduce do |result, value|