Project: datamanagement
Issue DM-5472: Update meas_mosaic for compatibility with new single frame processing
Following [recent changes to single frame processing|https://community.lsst.org/t/backward-incompatible-changes-to-processccdtask-and-subtasks/581], {{icSrc}} no longer includes celestial coordinates and {{icMatch}} is no longer being written. {{meas_mosaic}} requires this information. Provide a work-around.
Story points: 3