ogr2ogr does not preserve fid in geojson when specify RFC7946=YES

[jingsam]

I tried to covert a shapefile to geojson:

ogr2ogr -f GeoJSON a.geojson a.shp -preserve_fid -lco RFC7946=YES

In converted geojson, "id" is missing.

But I use following command, everthing works as expected.

ogr2ogr -f GeoJSON a.geojson a.shp -preserve_fid

RFC7946 says:

If a Feature has a commonly used identifier, that identifier
      SHOULD be included as a member of the Feature object with the name
      "id", and the value of this member is either a JSON string or
      number.

[Jukka Rahkonen]

This issue has some connection with #6538

[Even Rouault]

In 41191:

GeoJSON: fix writing of id with RFC7946=YES (fixes #7194)

[Even Rouault]

In 41192:

GeoJSON: fix writing of id with RFC7946=YES (fixes #7194)