Add inline_javascript tag to test 253

Author: bogdang989

conformance_tests.yaml

@@ -3311,5 +3311,5 @@
   label: optional_numerical_output_returns_0_not_null
   doc: |
     Test that optional number output is returned as 0, not null
-  tags: [ required, command_line_tool ]
+  tags: [ required, inline_javascript, ommand_line_tool ]
   id: 253