[IMP] rma : propagate cancelation

When canceling a rma order line, it will also cancel the previous (orig) steps.
Following steps (dest) can be managed with the propagate cancel option of the stock rules.
This commit also avoid canceling a whole picking which is problematic in case of the use of RMA groups

rma/models/rma_order_line.py

@@ -692,12 +692,21 @@ def check_cancel(self):
     def action_rma_cancel(self):
         for order in self:
             order.check_cancel()
+            # cancel ongoing orig moves
+            # dest move cancelation can be managed with propagate_cancel option
+            # on stock rules.
+            moves = order.move_ids
+            to_cancel_orig_moves = self.env["stock.move"]
+            while moves:
+                moves = moves.move_orig_ids.filtered(
+                    lambda m: m.state not in ("done", "cancel")
+                    and m.picking_id
+                    and not m.purchase_line_id
+                )
+                to_cancel_orig_moves |= moves
+            to_cancel_orig_moves._action_cancel()
             order.write({"state": "canceled"})
             order.move_ids._action_cancel()
-            shipments = order._get_in_pickings()
-            shipments |= order._get_out_pickings()
-            for ship in shipments:
-                ship.action_cancel()
         return True
 
     def _get_price_unit(self):