Connection knots are not removed when a connection is disconnected.

[Naros]

Describe the bug

When deleting a node that has a connection with knots, while the knots stop being rendered, when the graph is reloaded after an editor restart, the knots are added even though the connection they're based on no longer exists.

Expected behavior

Connection knots are dropped when a connection is broken.

Actual behavior

No response

How to Reproduce?

No response

Godot full version

4.2.2-stable

Orchestrator version

2.1.dev2

Additional information

No response