Delay some delegate removals to reduce CPU spent on recalculating sizes

resources/qml/Completer.qml

@@ -125,6 +125,8 @@ Control {
         delegate: Rectangle {
             property variant modelData: model
 
+            ListView.delayRemove: true
+
             color: model.index == popup.currentIndex ? Nheko.colors.highlight : Nheko.colors.base
             height: chooser.child.implicitHeight + 2 * popup.rowMargin
             implicitWidth: fullWidth ? ListView.view.width : chooser.child.implicitWidth + 4

resources/qml/MessageView.qml

@@ -449,6 +449,7 @@ Item {
             anchors.horizontalCenter: parent ? parent.horizontalCenter : undefined
             width: chat.delegateMaxWidth
             height: section.active ? section.height + timelinerow.height : timelinerow.height
+            ListView.delayRemove: true
 
             Loader {
                 id: section