[model-gateway] HA - Lightweight State Layer + gRPC Mesh (#14108)

Signed-off-by: Kun(llfl) <i@imux.top>
Signed-off-by: Tony Lu <tonylu@linux.alibaba.com>
Co-authored-by: Kun(llfl) <i@imux.top>

sgl-model-gateway/tests/common/test_app.rs

@@ -89,6 +89,8 @@ pub fn create_test_app(
         context: app_context,
         concurrency_queue_tx: None,
         router_manager: None,
+        mesh_handler: None,
+        mesh_sync_manager: None,
     });
 
     // Configure request ID headers (use defaults if not specified)
@@ -129,6 +131,8 @@ pub fn create_test_app_with_context(
         context: app_context.clone(),
         concurrency_queue_tx: None,
         router_manager: None,
+        mesh_handler: None,
+        mesh_sync_manager: None,
     });
 
     // Get config from the context