Interactivity: obsolete Interaction and direct people toward UserInputProcessor #4224
Description
The UserInputProcessor was added in ScottPlot 5.0.37 a little over a month ago. Its purpose is to replace Interaction and offer a simpler and more extendable way to respond to user inputs.
Both user control strategies work, but the old one is active by default. Docs and the sandbox app only use the new strategy. This issue will track making the new strategy the default, but leave the old strategy as an opt-in fallback.