Render outgoing presence from playbook configuration

roles/custom/matrix-continuwuity/templates/continuwuity.toml.j2

@@ -1147,7 +1147,7 @@ emergency_password = {{ matrix_continuwuity_config_emergency_password | to_json
 # There are only a few clients that even implement presence, so you
 # probably don't want to enable this.
 #
-#allow_outgoing_presence = {{ matrix_continuwuity_config_allow_outgoing_presence | to_json }}
+allow_outgoing_presence = {{ matrix_continuwuity_config_allow_outgoing_presence | to_json }}
 
 # How many seconds without presence updates before you become idle.
 # Defaults to 5 minutes.