[openclaw,tor-proxy] Opt task-webhook + torrserver out of external monitoring

Adds `external_monitor = false` to the ingress_factory calls for
task-webhook and torrserver so the `external-monitor-sync` CronJob
stops auto-creating `[External] <name>` monitors for them. Both
services remain deployed and reachable; only the Uptime Kuma monitors
are dropped.

stacks/openclaw/main.tf

@@ -843,6 +843,7 @@ module "task_webhook_ingress" {
   tls_secret_name  = var.tls_secret_name
   host             = "task-webhook"
   port             = 80
+  external_monitor = false
 }
 
 # --- CronJob: Scheduled cluster health check ---

stacks/tor-proxy/main.tf

@@ -301,6 +301,7 @@ module "torrserver_ingress" {
   tls_secret_name  = var.tls_secret_name
   port             = "8090"
   protected        = true
+  external_monitor = false
   extra_annotations = {
     "gethomepage.dev/enabled"      = "true"
     "gethomepage.dev/name"         = "TorrServer"