[FIX] mrp: prevent kit product quant update

Steps to reproduce:
- Create a storable kit product
- Update on hand quantity:
only the components are displayed(correct behavior)
- In Inventory tab open Inventory Adjustement
- Possible to edit kit quantity

Bug:
In the product tab when trying to update qty the kit product is
replaced with its components instead but it is still Possible to
edit kit quantity directly in the inventory app

Fix:
introduced python constraint to prevent user from directly editing
the kit product qty in master
in standard just display a warning

opw-3681703

closes odoo/odoo#160978

X-original-commit: ba81d4ef64933dc025c7a473456c5c056ed69aac
Signed-off-by: William Henrotin (whe) <whe@odoo.com>
Signed-off-by: Walid Hanniche (waha) <waha@odoo.com>

addons/mrp/i18n/mrp.pot

@@ -4712,6 +4712,12 @@ msgstr ""
 msgid "Routing"
 msgstr ""
 
+#. module: mrp
+#: code:addons/mrp/models/stock_quant.py:0
+#, python-format
+msgid "Return to Inventory"
+msgstr ""
+
 #. module: mrp
 #: model:ir.model.fields,field_description:mrp.field_mrp_workcenter__routing_line_ids
 msgid "Routing Lines"
@@ -6758,6 +6764,13 @@ msgstr ""
 msgid "You should provide a lot number for the final product."
 msgstr ""
 
+#. module: mrp
+#. odoo-python
+#: code:addons/mrp/models/stock_quant.py:0
+#, python-format
+msgid "You should update the components quantity instead of directly updating the quantity of the kit product."
+msgstr ""
+
 #. module: mrp
 #: model:ir.model.fields.selection,name:mrp.selection__stock_picking_type__done_mrp_lot_label_to_print__zpl
 #: model:ir.model.fields.selection,name:mrp.selection__stock_picking_type__generated_mrp_lot_label_to_print__zpl

addons/mrp/models/__init__.py

@@ -19,3 +19,4 @@ from . import stock_lot
 from . import stock_rule
 from . import stock_scrap
 from . import stock_warehouse
+from . import stock_quant

addons/mrp/models/stock_quant.py

@@ -0,0 +1,17 @@
+from odoo import models, _
+from odoo.exceptions import RedirectWarning
+
+
+class StockQuant(models.Model):
+    _inherit = 'stock.quant'
+
+    def action_apply_inventory(self):
+        bom_kits = self.env['mrp.bom']._bom_find(self.product_id, bom_type='phantom')
+        for record in self:
+            if record.product_id in bom_kits:
+                raise RedirectWarning(
+                    _('You should update the components quantity instead of directly updating the quantity of the kit product.'),
+                    self.env.ref('stock.action_view_inventory_tree').id,
+                    _("Return to Inventory"),
+                )
+        return super().action_apply_inventory()