fix: Increase Nextcloud wait timeout to 300s and make invitation flow non-blocking

- Nextcloud initialization can take 3-5 minutes on first deploy
- Both recovery and invitation flows now non-blocking
- Fixes deployment failures during fresh server builds

ansible/roles/nextcloud/tasks/docker.yml

@@ -25,5 +25,5 @@
     host: localhost
     port: 80
     delay: 10
-    timeout: 120
+    timeout: 300
   when: nextcloud_deploy.changed