Disable registration for Conduit by default

We do this for all other supported homeservers.

A "public by default" homeserver is a bad idea for most people.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2076

roles/matrix-conduit/defaults/main.yml

@@ -37,7 +37,7 @@ matrix_conduit_template_conduit_config: "{{ role_path }}/templates/conduit/condu
 matrix_conduit_max_request_size: 20_000_000
 
 # Enables registration. If set to false, no users can register on this server.
-matrix_conduit_allow_registration: true
+matrix_conduit_allow_registration: false
 
 matrix_conduit_allow_federation: true