Do not enable SchildiChat by default

Related to #2851 

Fixes #2861

group_vars/matrix_servers

@@ -3498,9 +3498,7 @@ matrix_client_cinny_self_check_validate_certificates: "{{ false if matrix_playbo
 #
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-# By default, this playbook installs the schildichat web UI on the `matrix_server_fqn_schildichat` domain.
-# If you wish to connect to your Matrix server by other means, you may wish to disable this.
-matrix_client_schildichat_enabled: true
+matrix_client_schildichat_enabled: false
 
 matrix_client_schildichat_container_image_self_build: "{{ matrix_architecture not in ['arm64', 'amd64'] }}"