Add a way to purge the list of recently used nodes inside the Create New Node window.

[drakonbane]

Ive been getting console errors about a node that an addon added that i no longer have installed due to deleted the addon. I suspect its because the editor wants to put it into the recently used nodes list but cant find it. Having a way to clear the recently used nodes list would be convenient anyway. Screenshots included for clarity.

[Calinou]

• Related to 'Recent' panel in 'Create new node' popup is never cleared. godot#35146.