fix(nextcloud-aio): drop AIO branding, keep template id, pin nextcloud 33.0.6

The template ships plain nextcloud + mariadb + redis + cron, not the
nextcloud/all-in-one mastercontainer. Display name and description no
longer claim AIO; folder id is kept as nextcloud-aio to avoid breaking
existing installs. Image pinned to the current stable tag (33.0.6).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

blueprints/nextcloud-aio/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   nextcloud:
-    image: nextcloud:stable
+    image: nextcloud:33.0.6
     restart: always
     volumes:
       - nextcloud_data:/var/www/html
@@ -15,7 +15,7 @@ services:
       - nextcloud_redis
 
   nextcloud_cron:
-    image: nextcloud:stable
+    image: nextcloud:33.0.6
     restart: always
     volumes:
       - nextcloud_data:/var/www/html

blueprints/nextcloud-aio/meta.json

@@ -1,7 +1,7 @@
 {
   "id": "nextcloud-aio",
   "name": "Nextcloud",
-  "version": "stable",
+  "version": "33.0.6",
   "description": "Nextcloud is a self-hosted file storage and sync platform with powerful collaboration capabilities. It integrates Files, Talk, Groupware, Office, Assistant and more into a single platform for remote work and data protection.",
   "logo": "nextcloud.png",
   "links": {