Stop prompting for "name" of new ad hoc LOIs/sites

[gino-m]

@jo-spek ok with you, to address google/ground-platform/issues/2518? If so, what label should we show in the web UI?

[jo-spek]

TL;DR: Make instructions for "Name this location" adjustable

It's not about stopping to prompt for a name, but about the possibility to give instructions in the prompt. Naming is indeed important, but the current workflow leaves people confused without instructions.

It always looks like this:

Instead of "Name this location" and "A new data collection site will be created", ideally the survey organizer would be able to customize the instruction, e.g., "Name this location" + "Give the site name and owner's name".

Further, the prompt should pop up right away after completing the geolocation, not only after clicking "Next".