fix: 自动重置线程计数器

Signed-off-by: 502647092 <admin@yumc.pw>

src/main/java/pw/yumc/Yum/Yum.java

@@ -43,7 +43,6 @@ public class Yum extends JavaPlugin {
     @Override
     public void onDisable() {
         NetworkManager.unregister();
-        tt.cancel();
     }
 
     @Override
@@ -114,6 +113,9 @@ public class Yum extends JavaPlugin {
         // 需要在主线程注册任务
         if (ConfigManager.i().isMainThreadCheck() && mainThread != null) {
             PluginKit.scp("§aIO管理系统已启用...");
+            if (tt != null) {
+                tt.cancel();
+            }
             task.scheduleAtFixedRate(tt = new MainThreadCheckTask(mainThread), 0, 5000);
         }
     }

src/main/java/pw/yumc/Yum/runnables/MainThreadCheckTask.java

@@ -66,6 +66,8 @@ public class MainThreadCheckTask extends TimerTask {
                 } else {
                     stopTime = 0;
                 }
+            } else {
+                stopTime = 0;
             }
         }
     }