Fix user deletion with new notification_deliveries table (#4437)

apps/labrinth/.sqlx/query-73c04dd1b08f2c738b8b818b986dbf0431915cd603e60eec6459ce0a84948616.json

@@ -0,0 +1,14 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n                DELETE FROM notifications_deliveries\n                WHERE notification_id = ANY($1)\n                ",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Left": [
+        "Int8Array"
+      ]
+    },
+    "nullable": []
+  },
+  "hash": "73c04dd1b08f2c738b8b818b986dbf0431915cd603e60eec6459ce0a84948616"
+}

apps/labrinth/src/database/models/user_item.rs

@@ -579,6 +579,16 @@ impl DBUser {
             .execute(&mut **transaction)
             .await?;
 
+            sqlx::query!(
+                "
+                DELETE FROM notifications_deliveries
+                WHERE notification_id = ANY($1)
+                ",
+                &notifications
+            )
+            .execute(&mut **transaction)
+            .await?;
+
             let user_collections = sqlx::query!(
                 "
                 SELECT id