refactor(coal): 调整 SseEmitter 默认超时时间为 20 分钟

-将 SseEmitter 的默认超时时间从 120 分钟调整为 20 分钟- 此修改旨在优化服务器资源使用，提高系统响应速度

src/main/java/cn/lihongjie/coal/coalWashingDailyAnalysis/controller/CoalWashingDailyAnalysisController.java

@@ -108,7 +108,7 @@ public class CoalWashingDailyAnalysisController extends BaseController {
     @PostMapping("/sse")
     public SseEmitter sse(@RequestBody IdRequest request) {
 
-        SseEmitter emitter = new SseEmitter(TimeUnit.MINUTES.toMillis(120));
+        SseEmitter emitter = new SseEmitter(TimeUnit.MINUTES.toMillis(20));
 //        SseEmitter emitter = new SseEmitter(TimeUnit.SECONDS.toMillis(10));
 
         sseService.register("coalWashingDailyAnalysis." + request.getId(), emitter);