While dragging values, if we right click a new node appear suddenly

[rajq123]

Problem statement

While dragging values, if we right click to cancel the dragging then a new node appear suddenly which feels irritating.

Steps to reproduce

1. Drag any value.
2. Right click while dragging
3. a new node will appear.

Expected result

Right click should cancel the operation but no new node should be appear.

Actual result

new node appear suddenly.

Sverchok version

1.2

[nortikin]

we use escape, for RMB there is menu, that have first point - sthetoscope creation. So, no way to easily use RMB for cancel