临时提交，尝试实现流程图的高亮

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/controller/task/vo/task/BpmTaskRespVO.java

@@ -14,6 +14,9 @@ import java.util.List;
 @ToString(callSuper = true)
 public class BpmTaskRespVO extends BpmTaskDonePageItemRespVO {
 
+    @ApiModelProperty(value = "任务定义的标识", required = true, example = "user-001")
+    private String definitionKey;
+
     /**
      * 审核的用户信息
      */

yudao-admin-server/src/main/java/cn/iocoder/yudao/adminserver/modules/bpm/convert/task/BpmTaskConvert.java

@@ -99,6 +99,7 @@ public interface BpmTaskConvert {
         });
     }
 
+    @Mapping(source = "taskDefinitionKey", target = "definitionKey")
     BpmTaskRespVO convert3(HistoricTaskInstance bean);
     BpmTaskRespVO.User convert3(SysUserDO bean);