fix:claimTime 转换时也加时区设置，并进行非空判断

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmTaskConvert.java

@@ -77,7 +77,8 @@ public interface BpmTaskConvert {
     }
 
     @Mapping(source = "suspended", target = "suspensionState", qualifiedByName = "convertSuspendedToSuspensionState")
-    @Mapping(target = "createTime", expression = "java(LocalDateTime.ofInstant(bean.getCreateTime().toInstant(),ZoneId.systemDefault()))")
+    @Mapping(target = "claimTime", expression = "java(bean.getClaimTime()==null?null: LocalDateTime.ofInstant(bean.getClaimTime().toInstant(),ZoneId.systemDefault()))")
+    @Mapping(target = "createTime", expression = "java(bean.getCreateTime()==null?null:LocalDateTime.ofInstant(bean.getCreateTime().toInstant(),ZoneId.systemDefault()))")
     BpmTaskTodoPageItemRespVO convert1(Task bean);
 
     @Named("convertSuspendedToSuspensionState")