Fix mark all read on room change

Fix it so that the view is correctly positioned at the bottom when the room is changed and make sure this is not seen as a scroll event (i.e. messages are not automatically marked as read but the timer has to time out first and all visible on screen).

src/qml/Page/RoomPage.qml

@@ -19,8 +19,6 @@ Kirigami.Page {
     /// Not readonly because of the separate window view.
     property NeoChatRoom currentRoom: RoomManager.currentRoom
     property bool loading: !root.currentRoom || (root.currentRoom.timelineSize === 0 && !root.currentRoom.allHistoryLoaded)
-    /// Used to determine if scrolling to the bottom should mark the message as unread
-    property bool hasScrolledUpBefore: false;
 
     /// Disable cancel shortcut. Used by the separate window since it provides its own cancel implementation.
     property bool disableCancelShortcut: false
@@ -32,12 +30,6 @@ Kirigami.Page {
     KeyNavigation.left: pageStack.get(0)
 
     onCurrentRoomChanged: {
-        if (!timelineViewLoader.item) {
-            return
-        }
-        applicationWindow().hoverLinkIndicator.text = "";
-        timelineViewLoader.item.positionViewAtBeginning();
-        hasScrolledUpBefore = false;
         if (!Kirigami.Settings.isMobile && chatBoxLoader.item) {
             chatBoxLoader.item.forceActiveFocus();
         }