Support creating nodes at a specified location when dragging connections and opening the double-click menu

Is your feature request related to a problem? Please describe.
The issue suggests adding functionality that allows users to create new nodes in a specific location during the process of dragging connections. When a user is creating a connection between nodes and opens a double-click menu, they should be able to create a new node directly at the point where they want to place it. This would provide more flexibility and ease of use in node-based interfaces or diagramming tools, allowing users to insert new nodes mid-connection without having to manually position them afterwards.

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The issue describes creating a node at a chosen location while dragging a connection and opening the double-click menu, but names no files, tests, or entry points. Start by locating the node editor's connection-drag and double-click menu handling, then clarify the placement interaction and how the new connection should be completed. Done means a new node can be placed at the selected point without manual repositioning.