Add `x.ui.update_popover(value: Optional[bool] = None)` and `x.ui.update_tooltip(value: Optional[bool] = None)` support

[schloerke]

Even if internally we call the toggle method in the implementation (rather than the JS implementation), that is ok with me.

Related: #716

[schloerke]

If these features are implemented, then there is fair motivation to remove x.ui.toggle_{popover, sidebar, switch, tooltip}() methods

... or... we should add toggle methods for anything that can be toggled... such as a input_checkbox().