[FIX] account_asset: deferred_revenue_category_id and asset_category_id

When creating an customer invoice with a product linked to a deferred revenue
category, the account used in the invoice line must be the account_asset_id.

When creating an vendor bill with a product linked to an asset
category, the account used in the invoice line must be the account_depreciation_id.

opw:22157

addons/account_asset/account_asset_invoice.py

@@ -90,3 +90,13 @@ class ProductTemplate(models.Model):
     _inherit = 'product.template'
     asset_category_id = fields.Many2one('account.asset.category', string='Asset Type', ondelete="restrict")
     deferred_revenue_category_id = fields.Many2one('account.asset.category', string='Deferred Revenue Type', ondelete="restrict")
+
+    @api.onchange('deferred_revenue_category_id')
+    def onchange_deferred_revenue(self):
+        if self.deferred_revenue_category_id:
+            self.property_account_income_id = self.deferred_revenue_category_id.account_asset_id
+
+    @api.onchange('asset_category_id')
+    def onchange_asset(self):
+        if self.asset_category_id:
+            self.property_account_expense_id = self.asset_category_id.account_asset_id