[FIX] account: allow overriding portal domain

Before this commit the only way to modify the domain is to completely override portal_my_invoices.
Since this function is so big this is not clean/easy to do.
By creating a separate function we can simply override it and we can reuse the function on two places.

closes odoo/odoo#77272

Signed-off-by: Florian Gilbert <FlorianGilbert@users.noreply.github.com>

addons/account/controllers/portal.py

@@ -13,9 +13,8 @@ class PortalAccount(CustomerPortal):
     def _prepare_home_portal_values(self, counters):
         values = super()._prepare_home_portal_values(counters)
         if 'invoice_count' in counters:
-            invoice_count = request.env['account.move'].search_count([
-                ('move_type', 'in', ('out_invoice', 'in_invoice', 'out_refund', 'in_refund', 'out_receipt', 'in_receipt')),
-            ]) if request.env['account.move'].check_access_rights('read', raise_exception=False) else 0
+            invoice_count = request.env['account.move'].search_count(self._get_invoices_domain()) \
+                if request.env['account.move'].check_access_rights('read', raise_exception=False) else 0
             values['invoice_count'] = invoice_count
         return values
 
@@ -30,12 +29,15 @@ class PortalAccount(CustomerPortal):
         }
         return self._get_page_view_values(invoice, access_token, values, 'my_invoices_history', False, **kwargs)
 
+    def _get_invoices_domain(self):
+        return [('move_type', 'in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]
+
     @http.route(['/my/invoices', '/my/invoices/page/<int:page>'], type='http', auth="user", website=True)
     def portal_my_invoices(self, page=1, date_begin=None, date_end=None, sortby=None, filterby=None, **kw):
         values = self._prepare_portal_layout_values()
         AccountInvoice = request.env['account.move']
 
-        domain = [('move_type', 'in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]
+        domain = self._get_invoices_domain()
 
         searchbar_sortings = {
             'date': {'label': _('Date'), 'order': 'invoice_date desc'},