The geometry type requires Type:"Feature" but the feature need
not be first in the JSON structure.

Adjust code to return an error if geometry isn't a JSON object,
but continue parsing searching for Type: "Feature" to trigger
the geometry parsing.

Thanks Derick Magnusen for the bug report.

More checks for bad geometry data added.

return an error on invalid gis data

Handle invalid GEOJSON-s in Geometry::create_from_json().

../sql/spatial.cc: In member function ‘double Gis_point::calculate_haversine(const Geometry*, double, int*)’:
../sql/spatial.cc:1093:45: error: ‘y1r’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 1093 |   res= 2*sphere_radius*asin((sqrt(dlat + cos(y1r)*cos(y2r)*dlong)));
      |                                          ~~~^~~~~
../sql/spatial.cc:1092:20: error: ‘x1r’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 1092 |   dlong=  sin((x2r - x1r)/2)*sin((x2r - x1r)/2);
      |               ~~~~~^~~~~~
../sql/spatial.cc:1093:54: error: ‘y2r’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 1093 |   res= 2*sphere_radius*asin((sqrt(dlat + cos(y1r)*cos(y2r)*dlong)));
      |                                                   ~~~^~~~~
../sql/spatial.cc:1092:20: error: ‘x2r’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
 1092 |   dlong=  sin((x2r - x1r)/2)*sin((x2r - x1r)/2);
      |               ~~~~~^~~~~~
c

- Cherry-pick 51e48b9f8981 - vscode gitignore
- Thanks Robin Dupret for the review.

Reviewed by:daniel@mariadb.org
            holyfoot@mariadb.com