stock_reception_screen: fix perf issue when move are created

When moves are created, Odoo triggers the computation of
related/computed fields that could be impacted by this change.

To compute the quantities the previous code was triggering a SQL query on
'stock_move' without any clause to satisfy the 'product.stock_move_ids'
One2many field: "SELECT id FROM stock_move WHERE product_id IN (...);",
hammering PostgreSQL and increasing the time needed to create a move.

By removing the dependencies on these quantity fields (that are
depending on 'product.stock_move_ids' field), we avoid this huge query
on the DB, speeding up the time required to create a move.

This should not impact the users of the reception screen as these
quantities are only displayed for information when scanning a received
product.

stock_reception_screen/models/stock_reception_screen.py

@@ -136,10 +136,10 @@ class StockReceptionScreen(models.Model):
         related="current_move_id.vendor_code"
     )
     current_move_product_qty_available = fields.Float(
-        related="current_move_id.product_id.qty_available"
+        compute="_compute_current_move_product_qty_fields"
     )
     current_move_product_outgoing_qty = fields.Float(
-        related="current_move_id.product_id.outgoing_qty"
+        compute="_compute_current_move_product_qty_fields"
     )
     current_move_product_last_lot_expiration_date = fields.Datetime(
         compute="_compute_current_move_product_last_lot_expiration_date",
@@ -205,6 +205,20 @@ class StockReceptionScreen(models.Model):
     warn_notification = fields.Char(default=False)
     warn_notification_html = fields.Html(compute="_compute_warn_notification")
 
+    @api.depends(
+        # NOTE: do not depends on qty product fields on purpose,
+        # Odoo ORM triggers a global search on stock.moves when a move is created
+        "current_move_id.product_id"
+    )
+    def _compute_current_move_product_qty_fields(self):
+        for rec in self:
+            rec.current_move_product_qty_available = (
+                rec.current_move_id.product_id.qty_available
+            )
+            rec.current_move_product_outgoing_qty = (
+                rec.current_move_id.product_id.outgoing_qty
+            )
+
     @api.depends("warn_notification")
     def _compute_warn_notification(self):
         warn_massage_html = """