fix: remove control_after_generate from widgets_values

Remove 'fixed' control parameter, only keep actual widget values.
Final: [enable, 42, 20, 8.0, euler, normal, 0, 10000, disable]

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

models/comfyui/workflows/advanced/animatediff-video-production-v1.json

@@ -128,7 +128,7 @@
       "order": 7,
       "mode": 0,
       "properties": {"Node name for S&R": "KSamplerAdvanced"},
-      "widgets_values": ["enable", 42, "fixed", 20, 8.0, "euler", "normal", 0, 10000, "disable"],
+      "widgets_values": ["enable", 42, 20, 8.0, "euler", "normal", 0, 10000, "disable"],
       "title": "AnimateDiff Sampler",
       "inputs": [
         {"name": "model", "type": "MODEL", "link": 7},