[FIX] stock: create SM from SML

In this commit, creating SM from SML if trasfer is immediate. Due
to which following issues are getting resolve -
For immediate trasfer -

1) Unable to cancel the picking in draft state and SML is created
by view directly (No SM).

2) Unable to see button Put in pack.

3) Picking remains in state draft instead of ready.

task-2275833

closes odoo/odoo#57098

Signed-off-by: William Henrotin <Whenrow@users.noreply.github.com>