优化多租户 Job 的实现，保持和 boot 版本尽量一致

yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/job/demo/DemoJob.java

@@ -5,10 +5,10 @@ import com.xxl.job.core.handler.annotation.XxlJob;
 import org.springframework.stereotype.Component;
 
 @Component
-@TenantJob
 public class DemoJob {
 
     @XxlJob("demoJob")
+    @TenantJob
     public void execute() {
         System.out.println("美滋滋");
     }