Closing floating editor send errors

[Zehir]

Describe the bug
When closing the floating flow editor some errors are throw into the ourput

To Reproduce
Steps to reproduce the behavior:

• Make the window floating using the top right icon ;

• Close the window
• See the errors

ERROR: Attempt to disconnect a nonexistent connection from '@Button@21472:<Button#2567786551167>'. Signal: 'pressed', callable: 'GraphNode(parameter_node.gd)::_open_node_documentation'.
  ERROR: Attempt to disconnect a nonexistent connection from '@Button@21468:<Button#2567451006838>'. Signal: 'pressed', callable: 'GraphNode(parameter_node.gd)::_open_node_documentation'.
  ERROR: Attempt to disconnect a nonexistent connection from '@Button@21464:<Button#2567115462509>'. Signal: 'pressed', callable: 'GraphNode(parameter_node.gd)::_open_node_documentation'.
  ERROR: Attempt to disconnect a nonexistent connection from '@Button@21460:<Button#2566779918180>'. Signal: 'pressed', callable: 'GraphNode(GaeaGraphNode)::_open_node_documentation'.
  ERROR: Attempt to disconnect a nonexistent connection from '@Button@21456:<Button#2566477928287>'. Signal: 'pressed', callable: 'GraphNode(GaeaGraphNode)::_open_node_documentation'.

Expected behavior
No errors

Screenshots
If applicable, add screenshots to help explain your problem.

Godot Version
4.5

Gaea Version
2.X

Additional context
Maybe since #290