Merge "Fix Shade background flicker at the beginning of transition" into main

import androidx.compose.foundation.gestures.rememberScrollableState

import androidx.compose.foundation.gestures.scrollBy

import androidx.compose.foundation.gestures.scrollable

import androidx.compose.foundation.interaction.MutableInteractionSource

import androidx.compose.foundation.layout.Box

import androidx.compose.foundation.layout.Column

import androidx.compose.foundation.layout.ExperimentalLayoutApi

import com.android.systemui.statusbar.notification.stack.ui.viewmodel.NotificationTransitionThresholds.EXPANSION_FOR_MAX_CORNER_RADIUS

import com.android.systemui.statusbar.notification.stack.ui.viewmodel.NotificationTransitionThresholds.EXPANSION_FOR_MAX_SCRIM_ALPHA

import com.android.systemui.statusbar.notification.stack.ui.viewmodel.NotificationsPlaceholderViewModel

import kotlin.math.max

import kotlin.math.roundToInt

import kotlinx.coroutines.awaitCancellation

import kotlinx.coroutines.coroutineScope

import kotlinx.coroutines.launch

import kotlin.math.max

import kotlin.math.roundToInt

object Notifications {

    object Elements {

        }

    }

    val interactionSource = remember { MutableInteractionSource() }

    Box(

        modifier =

            modifier

                    )

                }

                .thenIf(onEmptySpaceClick != null) {

                    Modifier.clickable(onClick = { onEmptySpaceClick?.invoke() })

                    Modifier.clickable(

                        interactionSource = interactionSource,

                        indication = null, // Prevent flicker on transition

                        onClick = { onEmptySpaceClick?.invoke() },

                    )

                }

    ) {

        Spacer(