add indent=4 kwarg to json.dumps() (#10307)

Author: norgeous

comfy_extras/nodes_preview_any.py

@@ -25,7 +25,7 @@ def main(self, source=None):
             value = str(source)
         elif source is not None:
             try:
-                value = json.dumps(source)
+                value = json.dumps(source, indent=4)
             except Exception:
                 try:
                     value = str(source)