Opening interactive window looks strange

[karthiknadig]

Testing #18355

Clicking on open interactive window take me from a tab that occupies full space to a split view:
From:

To:

The space on the left is un-used.

[luabud]

This is actually living in the Python extension

[luabud]

@minsa110 I think this is happening because the interactive window already opens to the side, so adding toSide seems to be causing this weird behaviour. I manually tested removing it and it worked as expected. I'll send a PR for it in a bit.