For #20218

Before removing the Jupyter extensions dependency, can we ensure that when users run runFileInteractive command (i.e., right click on Python code -> select Run in Interactive Window), we recommend and/or install the Jupyter extension (i.e., workbench.extensions.installExtension)?

According to the IW usage data that @amunger gathered, one of the biggest entry points for interactive window is from Python extension's command, runFileInteractive.