[FIX] account: Dashboard invoices refunds link

When clicking on the "Refunds" link of a
Sale / Purchase invoices journal,
creating a new invoice did not create
a new refund invoice, but a normal invoice.

opw-675408

addons/account/models/account_journal_dashboard.py

@@ -281,13 +281,15 @@ class account_journal(models.Model):
                 action_name = 'action_move_journal_line'
 
         _journal_invoice_type_map = {
-            'sale': 'out_invoice',
-            'purchase': 'in_invoice',
-            'bank': 'bank',
-            'cash': 'cash',
-            'general': 'general',
+            ('sale', None): 'out_invoice',
+            ('purchase', None): 'in_invoice',
+            ('sale', 'refund'): 'out_refund',
+            ('purchase', 'refund'): 'in_refund',
+            ('bank', None): 'bank',
+            ('cash', None): 'cash',
+            ('general', None): 'general',
         }
-        invoice_type = _journal_invoice_type_map[self.type]
+        invoice_type = _journal_invoice_type_map[(self.type, self._context.get('invoice_type'))]
 
         ctx = self._context.copy()
         ctx.update({

addons/account/views/account_journal_dashboard_view.xml

@@ -117,7 +117,7 @@
                                     </a>
                                 </div>
                                 <div>
-                                    <a type="object" name="open_action" context="{'use_domain': [('type','in',('out_refund','in_refund'))]}">
+                                    <a type="object" name="open_action" context="{'use_domain': [('type','in',('out_refund','in_refund'))], 'invoice_type': 'refund'}">
                                         <span t-if="journal_type == 'sale'">Refunds</span>
                                         <span t-if="journal_type == 'purchase'">Refunds</span>
                                     </a>