Enabled NotificationSettings by default, Fix spacing, use activeMemberCount for isOneToOne.

- Enabled Notification Settings by default
- Fix spacing
- Use activeMemberCount for isOneToOne

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/PreferencesFlowNode.kt

@@ -70,7 +70,6 @@ class PreferencesFlowNode @AssistedInject constructor(
         data object AnalyticsSettings : NavTarget
 
         @Parcelize
-
         data object About : NavTarget
 
         @Parcelize

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/notifications/NotificationSettingsView.kt

@@ -54,6 +54,7 @@ import io.element.android.libraries.designsystem.utils.OnLifecycleEvent
 import io.element.android.libraries.matrix.api.room.RoomNotificationMode
 import io.element.android.libraries.theme.ElementTheme
 import io.element.android.libraries.ui.strings.CommonStrings
+
 @Composable
 fun NotificationSettingsView(
     state: NotificationSettingsState,
@@ -166,7 +167,6 @@ private fun NotificationSettingsContentView(
         }
 }
 
-
 @Composable
 private fun getTitleForRoomNotificationMode(mode: RoomNotificationMode?) =
 when(mode) {
@@ -246,7 +246,6 @@ private fun ContentToPreview(state: NotificationSettingsState) {
     )
 }
 
-
 @Preview
 @Composable
 internal fun InvalidNotificationSettingsViewightPreview() =