input box code from non-jupyter IW will be sent to new jupyter IW

[amunger]

1. delete the jupyter keybinding for interactive.execute for shift+enter
2. type print(1) in the input box for an IW and press shift+enter
   🐛 new IW is opened to execute the code

[amunger]

verification:

1. install python and jupyter pre-release extensions
2. run Create new Interactive Window
3. type print(1) in the input box and press shift+enter (the keybinding is now contributed by core)
4. ensure the code was executed as expected