limit data from the tracker to the plane.

The stream of mavlink date to no go to the aircraft from the tracker... (For OSD)

currently, on the OSD, we are getting the antenna tracker altitude, rather than the aircraft altitude.

Start by tracing the MAVLink data path used for OSD telemetry and compare the antenna tracker altitude with the aircraft altitude. Confirm where tracker data is forwarded to the aircraft, then verify that the OSD reports the aircraft altitude and no longer receives the tracker altitude.

Written by the indexing model from the issue text.