Do not rebuild MPTT on nested creation

#5095 (closed) forced a rebuild of the MPTT when nested records are created. But indeed if the update in create is done before the fields to set (e.g. One2Many) the fast update algorithm can be used.

assigned to @ced

added trytond type::performance + 1 deleted label

added 1 deleted label and removed 1 deleted label

New review342941002 at https://codereview.tryton.org/342941002/#ps342951002

New changeset 2be0f68b7ac5 by Cédric Krier in branch 'default':
Do not rebuild tree of MPTT on nested creation
https://hg.tryton.org/trytond/rev/2be0f68b7ac5

added 1 deleted label and removed 1 deleted label

closed

New changeset f5115fedbe1d by Cédric Krier in branch 'default':
Do not rebuild tree of MPTT on nested creation
https://hg.tryton.org/tryton-env/rev/f5115fedbe1d