"OSISAF-CCI reference data currently missing" (in Dashboard diagnostic plot)

## The problem

In the current dashboard, navigating to the "Ocean and Sea Ice" diagnostics, one finds two graphs for the seasonal cycle of sea ice area (see below). In both title, we read that "OSISAF-CCI reference data currently missing)". However, the ESMValTool metric exists, and includes the OSISAF-CCI data (https://dashboard.climate-ref.org/diagnostics/esmvaltool/sea-ice-area-basic/figures).

I am asking if there is anything I (producer of the OSISAF-CCI data) can do to help? Or if this is something to be solved at a technical level between ESMValTool and the Dashboard. Maybe it is already solved in the upcoming version?

## Definition of "done"

The OSISAF-CCI data is shown in the dashboard plot, the title for the two plots is amended.