fix: hide nexus wall preview when wall disabled

modules/nexus/pages/WallpaperAndStyle.qml

@@ -43,6 +43,46 @@ ColumnLayout {
         color: Colours.tPalette.m3surfaceContainer
         radius: Tokens.rounding.large
 
+        Loader {
+            anchors.centerIn: parent
+            opacity: Config.background.wallpaperEnabled ? 0 : 1
+            active: opacity > 0
+
+            sourceComponent: ColumnLayout {
+                spacing: Tokens.spacing.extraSmall
+
+                MaterialIcon {
+                    Layout.alignment: Qt.AlignHCenter
+                    text: "hide_image"
+                    color: Colours.palette.m3onSurfaceVariant
+                    font: Tokens.font.icon.extraLarge
+                }
+
+                StyledText {
+                    Layout.alignment: Qt.AlignHCenter
+                    text: qsTr("Wallpaper disabled")
+                    color: Colours.palette.m3onSurfaceVariant
+                    font: Tokens.font.body.large
+                }
+            }
+
+            Behavior on opacity {
+                Anim {
+                    type: Anim.SlowEffects
+                }
+            }
+        }
+
+        Item {
+            anchors.fill: parent
+            opacity: Config.background.wallpaperEnabled ? 1 : 0
+
+            Behavior on opacity {
+                Anim {
+                    type: Anim.SlowEffects
+                }
+            }
+
             Loader {
                 id: wallIndicatorLoader
 
@@ -103,6 +143,7 @@ ColumnLayout {
                 }
             }
         }
+    }
 
     ButtonRow {
         Layout.alignment: Qt.AlignHCenter