[FIX] stock: fix update quantity action on Product Variant

- Install stock
- Create a Storable Product
- Add an Attribute with Variant Creation Mode set to Instantly (i.e. Color)
- On Product form, click on Variant smart button and open a Product Variant
- Click on "Update Quantity"
The Create button to edit Quantity on Hand is not present.

This comes from the Variant smart button (id: product_variant_action) that adds
'create': False in the context to prevent creation of Variant.
But when navigating to Update Quantity page, it is still in the context and hides
the Create button.

opw-2412380

closes odoo/odoo#63264

X-original-commit: 3d671ef824fec9dc8ee7d3666b6e528a3c794226
Signed-off-by: Anh Thao PHAM <kitan191@users.noreply.github.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/addons/stock/models/product.py b/addons/stock/models/product.py
index dea79417884..a331968cbc0 100644
--- a/addons/stock/models/product.py
+++ b/addons/stock/models/product.py
@@ -493,7 +493,7 @@ class Product(models.Model):
         return action
 
     def action_update_quantity_on_hand(self):
-        return self.product_tmpl_id.with_context(default_product_id=self.id).action_update_quantity_on_hand()
+        return self.product_tmpl_id.with_context(default_product_id=self.id, create=True).action_update_quantity_on_hand()
 
     def action_product_forecast_report(self):
         self.ensure_one()