[Improovement] Google Maps list import, re-import deduplication

[marco783]

When I import a list from google maps, if I rename a place and then re-import the list, that place will be duplicated.
For me, this is an issue, because, as in this case, I need to rename the places to be able to understand the name and it get duplicated :(

[mauriceboe]

Fixed, and it lands in 4.0.0.

The cause was smaller than it looks: the duplicate check only ever compared names, falling back to coordinates for places that had no name at all. A renamed place matched on neither. Meanwhile the Google feature id had been stored on every imported place the whole time — it was simply never read.

It is read now, and first: a place is recognised by its google_place_id, google_ftid or OSM id before the name or the coordinates are considered. So rename what you like, move the pin if the geocode was off, and re-importing the list will skip it instead of adding a twin.

I deliberately did not just widen the coordinate check instead. That would have merged the restaurant and the bar in the same building, which is a worse failure than the one you reported. Copying places out of a Collections list into a trip gets the same fix, since it was carrying its own copy of the old logic.