Fix log entry details for datasync logs without external link (Z#23210015)

src/pretix/base/services/invoices.py

@@ -671,7 +671,6 @@ def send_invoices_to_organizer(sender, **kwargs):
                             event=i.event,
                             invoices=[i],
                             auto_email=True,
-                            plain_text_only=True,
                         )
                     i.sent_to_organizer = True
                 else:

src/pretix/base/services/orders.py

@@ -2825,7 +2825,7 @@ class OrderChangeManager:
     def _check_complete_cancel(self):
         current = self.order.positions.count()
         cancels = sum([
-            1 + o.position.addons.count() for o in self._operations if isinstance(o, self.CancelOperation)
+            1 + o.position.addons.filter(canceled=False).count() for o in self._operations if isinstance(o, self.CancelOperation)
         ]) + len([
             o for o in self._operations if isinstance(o, self.SplitOperation)
         ])

src/pretix/control/logdisplay.py

@@ -455,7 +455,7 @@ class OrderDataSyncSuccessLogEntryType(OrderDataSyncLogEntryType):
                     links.append(", ".join(
                         prov.get_external_link_html(logentry.event, obj['external_link_href'], obj['external_link_display_name'])
                         for obj in objs
-                        if obj and 'external_link_href' in obj and 'external_link_display_name' in obj
+                        if obj and obj.get('external_link_href') and obj.get('external_link_display_name')
                     ))
 
         return mark_safe(escape(super().display(logentry, data)) + "".join("<p>" + link + "</p>" for link in links))