fix(vite-node): fix watch on vite 6 (#6422)

Author: hi-ogawa

packages/vite-node/src/hmr/emitter.ts

@@ -63,6 +63,15 @@ export function viteNodeHmrPlugin(): Plugin {
         _send(payload)
         emitter.emit('message', payload)
       }
+      // eslint-disable-next-line ts/ban-ts-comment
+      // @ts-ignore Vite 6 compat
+      const environments = server.environments
+      if (environments) {
+        environments.ssr.hot.send = function (payload: any) {
+          _send(payload)
+          emitter.emit('message', payload)
+        }
+      }
     },
   }
 }