Fix bug on move copy, reset package level

On stock.move, the `package_level_id` field did not have a `copy=False`
attribute when version 13.0 of Odoo was released. So when we create
a new move, the package level of the move being copied was linked
as well to the new move.

It has been fixed recently in odoo in
odoo/odoo@ecf726a
but to be on the safe side if the code is not up-to-date,
it's anyway better to force a False value.

stock_dynamic_routing/models/stock_move.py

@@ -436,4 +436,8 @@ def _prepare_routing_move_values(self, picking_type, source, destination):
             "location_dest_id": destination.id,
             "state": "waiting",
             "picking_type_id": picking_type.id,
+            # copy=False was missing on this field up to
+            # https://github.com/odoo/odoo/commit/ecf726ae8221e6871c1e391294c633d8b6bcaa9a
+            # to be on the safe side, force it to False
+            "package_level_id": False
         }