revert: mark Feature::RemoteControl as removed (#22520)

reverts: https://github.com/openai/codex/pull/22386

codex-rs/app-server/src/message_processor.rs

@@ -42,6 +42,7 @@ use crate::skills_watcher::SkillsWatcher;
 use crate::thread_state::ConnectionCapabilities;
 use crate::thread_state::ThreadStateManager;
 use crate::transport::AppServerTransport;
+use crate::transport::RemoteControlHandle;
 use async_trait::async_trait;
 use codex_analytics::AnalyticsEventsClient;
 use codex_analytics::AppServerRpcTransport;
@@ -264,6 +265,7 @@ pub(crate) struct MessageProcessorArgs {
     pub(crate) auth_manager: Arc<AuthManager>,
     pub(crate) installation_id: String,
     pub(crate) rpc_transport: AppServerRpcTransport,
+    pub(crate) remote_control_handle: Option<RemoteControlHandle>,
     pub(crate) plugin_startup_tasks: crate::PluginStartupTasks,
 }
 
@@ -286,6 +288,7 @@ impl MessageProcessor {
             auth_manager,
             installation_id,
             rpc_transport,
+            remote_control_handle,
             plugin_startup_tasks,
         } = args;
         auth_manager.set_external_auth(Arc::new(ExternalAuthRefreshBridge {
@@ -443,6 +446,7 @@ impl MessageProcessor {
             auth_manager,
             thread_manager.clone(),
             analytics_events_client,
+            remote_control_handle,
         );
         let external_agent_config_processor = ExternalAgentConfigRequestProcessor::new(
             outgoing.clone(),