[FIX] stock: sequence_code key error when create stock pick type

KeyError "sequence_code" occurs when creating a stock picking type. This is
because there is not a key "sequence_code" in vals.

This commit added the condition to ensure "sequence_code" key
is available in vals.

sentry-3828105626

closes odoo/odoo#113849

X-original-commit: f88cd4967d0f455b246f481104090417e4ec10e0
Signed-off-by: Adrien Widart <awt@odoo.com>

addons/stock/models/stock_picking.py

@@ -100,7 +100,7 @@ class PickingType(models.Model):
     @api.model_create_multi
     def create(self, vals_list):
         for vals in vals_list:
-            if 'sequence_id' not in vals or not vals['sequence_id']:
+            if not vals.get('sequence_id') and vals.get('sequence_code'):
                 if vals.get('warehouse_id'):
                     wh = self.env['stock.warehouse'].browse(vals['warehouse_id'])
                     vals['sequence_id'] = self.env['ir.sequence'].sudo().create({