Geo widgets manual entry should support long press

[lognaturel]

Software and hardware versions

Collect v1.21.0.beta0

Problem description

As discussed in #2933 (comment), manual entry of points can now be done through single-tapping. It was previously done with long press. I spent several seconds thinking the widget was broken when it didn't respond to my long presses so I expect this will trip enumerators up. Since it doesn't "cost" anything to also support long press, I think we should. This is especially worth doing since the single tap interaction may soon be replaced by panning the map (as discussed on the forum). That means it's even less worthwhile for users to learn the new behavior.

CC @yanokwa @zestyping

[zestyping]

This makes a lot of sense. Thanks, @lognaturel!