[bug] Import Session bug fix (#11456)

- Check session completion when deleting rows

src/backend/InvenTree/InvenTree/apps.py

@@ -65,10 +65,12 @@ class InvenTreeConfig(AppConfig):
             self.start_background_tasks()
 
             if not InvenTree.ready.isInTestMode():  # pragma: no cover
-                # Update exchange rates
-                InvenTree.tasks.offload_task(InvenTree.tasks.update_exchange_rates)
                 # Let the background worker check for migrations
                 InvenTree.tasks.offload_task(InvenTree.tasks.check_for_migrations)
+                # Update exchange rates
+                InvenTree.tasks.offload_task(
+                    InvenTree.tasks.update_exchange_rates, force_async=True
+                )
 
         self.update_site_url()
         self.load_unit_registry()

src/backend/InvenTree/importer/models.py

@@ -552,6 +552,12 @@ class DataImportRow(models.Model):
         self.valid = self.validate()
         super().save(*args, **kwargs)
 
+    def delete(self, *args, **kwargs):
+        """Update the session progress when a row is deleted."""
+        session = self.session
+        super().delete(*args, **kwargs)
+        session.check_complete()
+
     session = models.ForeignKey(
         DataImportSession,
         on_delete=models.CASCADE,