RoomNodeView: remove contentWindowInsets=systemBars as it's default one

Author: ganfra

appnav/src/main/kotlin/io/element/android/appnav/room/LoadingRoomNodeView.kt

@@ -27,7 +27,6 @@ import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.layout.systemBars
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -63,7 +62,6 @@ fun LoadingRoomNodeView(
 ) {
     Scaffold(
         modifier = modifier,
-        contentWindowInsets = WindowInsets.systemBars,
         topBar = {
             Column {
                 ConnectivityIndicatorView(isOnline = hasNetworkConnection)