Radius of previous nodes is not updated when using the thumbstick radius adjustment on a selected node

[TobiasSelzner]

When using the radius widget for a selected node, the radius of previously drawn nodes will be updated (i.e. if we adjust a node to radius > radius of previous nodes, the radius of the previous nodes will be increased accordingly). This feature mimicks the biological rule that roots seldomely get thicker in their downwards trajectory.

This feature is currently not working, when the thumbstick is used to adjust the radius. Noteworthy: the correct radius scaling behaviour can be triggered if the selected node is moved with the move-node widget.

[dhelmrich]

I did find that there is a broken scaling trigger when the timer runs out based on the interaction.