Pin default-flatpaks@v1: v2 module has breaking config changes

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

recipes/bc250-console-gnome.yml

@@ -27,7 +27,7 @@ modules:
       - chmod 0755 /usr/bin/bc250-remote-setup /usr/bin/bc250-steam-bpm-autostart
       - dconf update # compile the local.d/gdm.d console defaults into the dconf dbs
 
-  - type: default-flatpaks
+  - type: default-flatpaks@v1
     notify: true
     system:
       install: