[FIX] edi_voxel_account_invoice_oca: Intercept post low level method

Inheriting post instead of _post makes that certain roots followed to
post invoices didn't trigger the Voxel sending, which is incorrect.

Let's inherit the low level method then.

TT49512

edi_voxel_account_invoice_oca/models/account_move.py

@@ -1,4 +1,5 @@
 # Copyright 2019 Tecnativa - Ernesto Tejeda
+# Copyright 2024 Tecnativa - Pedro M. Baeza
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
 from odoo import fields, models
@@ -47,8 +48,9 @@ def _search_voxel_enabled(self, operator, value):
             ]
         return [("id", "in", self.search(domain).ids)]
 
-    def post(self):
-        res = super().post()
+    def _post(self, soft=True):
+        """Send to Voxel when posting."""
+        res = super()._post(soft=soft)
         self.action_send_to_voxel()
         return res