Fixed deserialization bug where nodes depending on on_input_connected did not have their connections initialized correctly.

Added BaseNode.on_input_connected call to base.graph._deserialize() (graph.py:1615) to fix this issue.

Author: GRAYgoose124

NodeGraphQt/base/graph.py

@@ -1612,6 +1612,9 @@ def _deserialize(self, data, relative_pos=False, pos=None):
                 if allow_connection:
                     self._undo_stack.push(PortConnectedCmd(in_port, out_port))
 
+                # Run on_input_connected to ensure connections are fully set up after deserialization.
+                in_node.on_input_connected(in_port, out_port)
+
         node_objs = nodes.values()
         if relative_pos:
             self._viewer.move_nodes([n.view for n in node_objs])