fix: Disallow toolbox/insert during a keyboard-driven move#425

maribethb merged 2 commits intoRaspberryPiFoundation:mainRaspberryPiFoundation/blockly-keyboard-experimentation:mainfrom

microbit-matt-hillsdon:toolbox-draggingmicrobit-matt-hillsdon/blockly-keyboard-experimentation:toolbox-draggingCopy head branch name to clipboard