sortByState是一个mutableState变量，当sortByState改变时，resultListAllMInfo也会改变，测试后没有问题。
而total变量基于resultListAllMInfo使用derivedStateOf方法，我认为它总是得到最新的值，但total是用EResult.LOADING启动一次的情况。
我的代码有什么问题？

var sortByState by mutableStateOf(ESortBy.START_PRIORITY)

    val resultListAllMInfo: StateFlow<EResult<List<MInfo>>> by derivedStateOf {
        handelMInfo.listAll(sortByState).stateIn(viewModelScope, SharingStarted.WhileSubscribed(), EResult.LOADING)
    }

    val total by derivedStateOf {
        when (val s = resultListAllMInfo.value) {
            is EResult.SUCCESS -> {
                log("Success")               
                s.data.size
            }

            is EResult.ERROR -> {
                log("Error")
                0
            }

            is EResult.LOADING -> {
                log("Loading")
                0
            }
        }
    }

  sealed class EResult<out R> {
      data class  SUCCESS<out T>(val data: T) : EResult<T>()
      data class  ERROR(val exception: Exception) : EResult<Nothing>()
      object      LOADING: EResult<Nothing>()
  }