[FIX] stock: immediate transfers in the future

Immediate transfers only fill the quantity done of stock moves/stock move lines
Those transfer are thus not taken into account for the forecast computation if they
are not validated. Indeed, the stock quant are not yet updated and the initial demand
is left blank.

This commit duplicate the quantity done of immediate transfer on their initial demand
this quantity is still hidden in the view but can now enter in the forecast quantity.

closes odoo/odoo#38169

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/stock/models/stock_move_line.py

@@ -199,6 +199,12 @@ class StockMoveLine(models.Model):
         mls = super(StockMoveLine, self).create(vals_list)
 
         for ml in mls:
+            if ml.move_id and \
+                    ml.move_id.picking_id and \
+                    ml.move_id.picking_id.immediate_transfer and \
+                    ml.move_id.state != 'done' and \
+                    'qty_done' in vals:
+                ml.move_id.product_uom_qty = ml.move_id.quantity_done
             if ml.state == 'done':
                 if 'qty_done' in vals:
                     ml.move_id.product_uom_qty = ml.move_id.quantity_done
@@ -347,7 +353,7 @@ class StockMoveLine(models.Model):
         # done stock move should have its `quantity_done` equals to its `product_uom_qty`, and
         # this is what move's `action_done` will do. So, we replicate the behavior here.
         if updates or 'qty_done' in vals:
-            moves = self.filtered(lambda ml: ml.move_id.state == 'done').mapped('move_id')
+            moves = self.filtered(lambda ml: ml.move_id.state == 'done' or ml.move_id.picking_id and ml.move_id.picking_id.immediate_transfer).mapped('move_id')
             for move in moves:
                 move.product_uom_qty = move.quantity_done
         next_moves._do_unreserve()