Add Ordered Passthrough node with auto-wired execution order

JS extension auto-creates LiteGraph links between consecutive
passthrough nodes based on their order widget (1→2→3→4), hiding
the wait_for input and drawing visual chain lines between nodes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "comfyui-json-dynamic"
-version = "1.2.2"
+version = "1.2.3"
 description = "ComfyUI nodes for dynamic JSON loading and string/path utility operations"
 license = { file = "LICENSE" }
 requires-python = ">=3.10"