Test disable_tags register

lib/liquid/tag.rb

@@ -38,8 +38,10 @@ module Liquid
       ''
     end
 
-    def disabled?(context)
-      context.registers['disabled_tags']&.disabled?(tag_name)
+    def disabled?(context, output)
+      if context.registers['disabled_tags']&.disabled?(tag_name)
+        output << disabled_response
+      end
     end
 
     def disabled_response

lib/liquid/tags/include.rb

@@ -45,7 +45,7 @@ module Liquid
     end
 
     def render_to_output_buffer(context, output)
-      return output << disabled_response if disabled?(context)
+      disabled?(context, output) && return
       template_name = context.evaluate(@template_name_expr)
       raise ArgumentError, options[:locale].t("errors.argument.include") unless template_name