StateFlow collect not firing for list type

@HiltViewModel
class HistoryViewModel @Inject constructor(private val firebaseRepository: FirebaseRepository) :
    ViewModel() {

    private val translateList: MutableList<Translate> = mutableListOf()

    private val _translateListState: MutableStateFlow<List<Translate>> =
        MutableStateFlow(translateList)

    val translateListState = _translateListState.asStateFlow()

    init {
        listenToSnapshotData()
    }

    private suspend fun addItemToList(translate: Translate) {
        Log.d("customTag", "item added adapter $translate")
        translateList.add(translate)
        _translateListState.emit(translateList)
    }

    private suspend fun removeItemFromList(translate: Translate) {
        Log.d("customTag", "item removed adapter $translate")
        val indexOfItem = translateList.indexOfFirst {
            it.id == translate.id
        }
        if (indexOfItem != -1) {
            translateList.removeAt(indexOfItem)
            _translateListState.emit(translateList)
        }
    }

    private suspend fun updateItemFromList(translate: Translate) {
        Log.d("customTag", "item modified adapter $translate")
        val indexOfItem = translateList.indexOfFirst {
            it.id == translate.id
        }
        if (indexOfItem != -1) {
            translateList[indexOfItem] = translate
            _translateListState.emit(translateList)
        }
    }

    private fun listenToSnapshotData() {
        viewModelScope.launch {
            firebaseRepository.translateListSnapshotListener().collect { querySnapshot ->
                querySnapshot?.let {
                    for (document in it.documentChanges) {
                        val translateData = document.document.toObject(Translate::class.java)
                        when (document.type) {
                            DocumentChange.Type.ADDED -> {
                                addItemToList(translate = translateData)
                            }
                            DocumentChange.Type.MODIFIED
                            -> {
                                updateItemFromList(translate = translateData)
                            }
                            DocumentChange.Type.REMOVED
                            -> {
                                removeItemFromList(translate = translateData)
                            }
                        }
                    }
                }
            }
        }
    }
}

Here data comes properly in querySnapshot in listenToSnapshotData function. And post that it properly calls corresponding function to update the list.
But after this line _translateListState.emit(translateList) flow doesn't go to corresponding collectLatest

private fun observeSnapShotResponse() {
        lifecycleScope.launch {
            repeatOnLifecycle(Lifecycle.State.STARTED) {
                historyViewModel.translateListState.collectLatest {
                    Log.d("customTag", "calling submitList from fragment")
                    translateListAdapter.submitList(it)
                }
            }
        }
    }

calling submitList from fragment is called once at the start, but as & when data is modified in list viewmodel, callback doesn't come to collectLatest