cubicweb-workorder #3224070 shouldn't update progress of entities being deleted [validation pending]

this may leads to crash

prioritynormal
typebug
done in0.11.2
load0.100
load left0.000
closed by#24f1ada2c055 don't update progress of deleted entities. Closes #3224070
patchdon't update progress of deleted entities. Closes #3224070 [applied]