Improve geo dataset builder creation

[AndreiKingsley]

Now, if user provides geometry data column with the same size as the original one, it works incorrect.

[AndreiKingsley]

Also, there's a Lets-Plot error when use layer which geom is not compatible with Geo:

geodf.plot {
   geoMap()
   hLine {
     // error on rendering
      yIntercent.constant(1.0)
   }
}