[FIX] pos_cache: repair broken xpath
[FIX] pos_cache: repair broken xpath

The button `set_deprecated` no longer exists in the parent view.
Add the button next to the pos_cache field, at the end of the form.

dfang/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,dfang/odoo,ygol/odoo,dfang/odoo,dfang/odoo