cubicweb-file #2517078 Gallery View is throwing an Exception: select ambiguity [done]

This exception only happens when 2 images are to be display.

prioritynormal
typebug
done in1.13.1
load left0.000
closed by#944709726157 [views/gallery] fix selector ambig?ity (likely introduced by cw 3.15), closes #2517078