lima: Sync the first detector size

Closes #142 (closed)

This PR fixes the first size of the detecotr.

It's common to fall down in that state with in simulation with fresh empty redis DB.

This should not be the case at beamline, and this should anyway be handled by BLISS.

In the mid time, here is a fix.

(cherry picked from commit 3171c980)

Co-authored-by: Valentin Valls valentin.valls@esrf.fr