Wire jitsi conditional restart variables into group_vars/matrix_servers

Replace hardcoded restart_necessary: true with the computed variables
(jitsi_web_restart_necessary, jitsi_prosody_restart_necessary,
jitsi_jicofo_restart_necessary, jitsi_jvb_restart_necessary) that the
jitsi role already exposes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

group_vars/matrix_servers

@@ -689,28 +689,28 @@ devture_systemd_service_manager_services_list_auto: |
     ([{
       'name': (jitsi_identifier + '-web.service'),
       'priority': 4200,
-      'restart_necessary': true,
+      'restart_necessary': (jitsi_web_restart_necessary | bool),
       'groups': ['matrix', 'jitsi', 'jitsi-web'],
     }] if jitsi_enabled else [])
     +
     ([{
       'name': (jitsi_identifier + '-prosody.service'),
       'priority': 4000,
-      'restart_necessary': true,
+      'restart_necessary': (jitsi_prosody_restart_necessary | bool),
       'groups': ['matrix', 'jitsi', 'jitsi-prosody'],
     }] if jitsi_enabled else [])
     +
     ([{
       'name': (jitsi_identifier + '-jicofo.service'),
       'priority': 4100,
-      'restart_necessary': true,
+      'restart_necessary': (jitsi_jicofo_restart_necessary | bool),
       'groups': ['matrix', 'jitsi', 'jitsi-jicofo'],
     }] if jitsi_enabled else [])
     +
     ([{
       'name': (jitsi_identifier + '-jvb.service'),
       'priority': 4100,
-      'restart_necessary': true,
+      'restart_necessary': (jitsi_jvb_restart_necessary | bool),
       'groups': ['matrix', 'jitsi', 'jitsi-jvb'],
     }] if jitsi_enabled else [])
     +