Geometry race condition fix

* fixes race condition for geometry conflict and parcel calculation
* harmonizes empty geometries from None/MultiPolygonEmpty to MultiPolygonEmpty

ema/forms.py

@@ -64,8 +64,6 @@ class NewEmaForm(AbstractCompensationForm, CompensationResponsibleFormMixin, Pik
 
             # Create log entry
             action = UserActionLogEntry.get_created_action(user)
-            # Process the geometry form
-            geometry = geom_form.save(action)
 
             handler = Handler.objects.create(
                 type=handler_type,
@@ -83,7 +81,6 @@ class NewEmaForm(AbstractCompensationForm, CompensationResponsibleFormMixin, Pik
                 title=title,
                 responsible=responsible,
                 created=action,
-                geometry=geometry,
                 comment=comment,
                 is_pik=is_pik,
             )
@@ -93,6 +90,11 @@ class NewEmaForm(AbstractCompensationForm, CompensationResponsibleFormMixin, Pik
 
             # Add the log entry to the main objects log list
             acc.log.add(action)
+
+        # Process the geometry form (NOT ATOMIC TRANSACTION DUE TO CELERY!)
+        geometry = geom_form.save(action)
+        acc.geometry = geometry
+        acc.save()
         return acc
 
 
@@ -141,8 +143,6 @@ class EditEmaForm(NewEmaForm):
 
             # Create log entry
             action = UserActionLogEntry.get_edited_action(user)
-            # Process the geometry form
-            geometry = geom_form.save(action)
 
             # Update responsible data
             self.instance.responsible.handler.type = handler_type
@@ -155,7 +155,6 @@ class EditEmaForm(NewEmaForm):
             # Update main oject data
             self.instance.identifier = identifier
             self.instance.title = title
-            self.instance.geometry = geometry
             self.instance.comment = comment
             self.instance.is_pik = is_pik
             self.instance.modified = action
@@ -163,6 +162,11 @@ class EditEmaForm(NewEmaForm):
 
             # Add the log entry to the main objects log list
             self.instance.log.add(action)
+
+        # Process the geometry form (NOT ATOMIC TRANSACTION DUE TO CELERY!)
+        geometry = geom_form.save(action)
+        self.instance.geometry = geometry
+        self.instance.save()
         return self.instance