It is not possible to quickly enable and disable the Shift button.
What should this feature achieve?
It would be nice to have a new feature that lets users quickly toggle the Shift button on and off during text editing. The idea is to hold the Shift button to toggle between Shift/Uppercase being momentary on or off.
Are there any workarounds?
No, the only current solution is to press the Caps Lock button on the keyboard manually.