fix 修复 超时时间单位设置错误 应该是毫秒

ruoyi-common/ruoyi-common-sse/src/main/java/org/dromara/common/sse/core/SseEmitterManager.java

@@ -39,7 +39,7 @@ public class SseEmitterManager {
         Map<String, SseEmitter> emitters = USER_TOKEN_EMITTERS.computeIfAbsent(userId, k -> new ConcurrentHashMap<>());
 
         // 创建一个新的 SseEmitter 实例，超时时间设置为一天 避免连接之后直接关闭浏览器导致连接停滞
-        SseEmitter emitter = new SseEmitter(86400L);
+        SseEmitter emitter = new SseEmitter(86400000L);
 
         emitters.put(token, emitter);