TDS-5.5 resets standard name for rotated-pole coordinate variables

[rkouznetsov]

Manifest-Version: 1.0
Implementation-Title: THREDDS Data Server (TDS)
Implementation-Version: 5.5-SNAPSHOT
Implementation-Vendor-Id: edu.ucar
Implementation-Vendor: UCAR/Unidata
Implementation-URL: https://www.unidata.ucar.edu/software/tds/
Created-By: Gradle 6.9.1
Build-Jdk: 11.0.12
Built-By: ubuntu
Built-On: 2022-10-21T06:29:23+0000

The original file has rotated-pole projection:

        float rlon(rlon) ;
                rlon:axis = "X" ;
                rlon:units = "degrees" ;
                rlon:long_name = "longitude in rotated pole grid" ;
                rlon:standard_name = "grid_longitude" ;
                rlon:_CoordinateAxisType = "GeoX" ;
        float rlat(rlat) ;
                rlat:axis = "Y" ;
                rlat:units = "degrees" ;
                rlat:long_name = "latitude in rotated pole grid" ;
                rlat:standard_name = "grid_latitude" ;
                rlat:_CoordinateAxisType = "GeoY" ;

When the file is served via thredds (ncss or DAP) the coordinates become:

        float rlat(rlat) ;
                rlat:units = "degrees" ;
                rlat:long_name = "latitude in rotated pole grid" ;
                rlat:axis = "Y" ;
                rlat:standard_name = "projection_y_coordinate" ;
        float rlon(rlon) ;
                rlon:units = "degrees" ;
                rlon:long_name = "longitude in rotated pole grid" ;
                rlon:axis = "X" ;
                rlon:standard_name = "projection_x_coordinate" ;

The latter is not compliant with CF-1.7 convention https://cfconventions.org/Data/cf-conventions/cf-conventions-1.7/build/ch05s06.html nether with CF convention draft https://cfconventions.org/cf-conventions/cf-conventions.html.
I am not sure which of the two (CF or TDS) has to be bend, but there is a clear mismatch. I would prefer to leave projection coordinates for easting and northing, and use grid_longitude and grid_latitude for rotated-pole mappings, in accordance with CF.

Thank you!