Refactor based on better implementation

src/qml/RoomDelegate.qml

@@ -10,7 +10,6 @@ import org.kde.kirigami as Kirigami
 import org.kde.kirigamiaddons.delegates as Delegates
 import org.kde.kirigamiaddons.labs.components as Components
 import org.kde.kitemmodels
-import org.kde.desktop.private as Private
 
 import org.kde.neochat
 
@@ -46,6 +45,14 @@ QQC2.ItemDelegate {
     Keys.onEnterPressed: clicked()
     Keys.onReturnPressed: clicked()
 
+    leftInset: horizontalPadding / 2
+    rightInset: horizontalPadding / 2
+    // We want total spacing between consecutive list items to be
+    // verticalPadding. So use half that as top/bottom margin, separately
+    // ceiling/flooring them so that the total spacing is preserved.
+    topInset: Math.ceil(verticalPadding / 2)
+    bottomInset: Math.ceil(verticalPadding / 2)
+
     TapHandler {
         acceptedButtons: Qt.RightButton
         onTapped: (eventPoint, button) => root.createRoomListContextMenu()
@@ -146,11 +153,6 @@ QQC2.ItemDelegate {
         }
     }
 
-    background: Private.DefaultListItemBackground {
-        control: root
-        styling: Private.DefaultListItemBackground.Styling.List
-    }
-
     function createRoomListContextMenu() {
         const component = Qt.createComponent('org.kde.neochat', 'ContextMenu');
         if (component.status === Component.Error) {