settings: fix modal not opening on latest quickshell (#1357)

quickshell/DMSShell.qml

@@ -442,17 +442,15 @@ Item {
             PopoutService.settingsModalLoader = settingsModalLoader;
         }
 
-        onActiveChanged: {
-            if (active && item) {
-                PopoutService.settingsModal = item;
-                PopoutService._onSettingsModalLoaded();
-            }
-        }
-
         SettingsModal {
             id: settingsModal
             property bool wasShown: false
 
+            Component.onCompleted: {
+                PopoutService.settingsModal = settingsModal;
+                PopoutService._onSettingsModalLoaded();
+            }
+
             onVisibleChanged: {
                 if (visible) {
                     wasShown = true;