Overview: potential fix for fallback wallpaper showing after logout/login

Modules/Background/Overview.qml

@@ -21,6 +21,10 @@ Variants {
         if (modelData) {
           Logger.log("Overview", "Loading Overview component for Niri on", modelData.name)
         }
+        updateWallpaper()
+      }
+
+      function updateWallpaper() {
         wallpaper = modelData ? WallpaperService.getWallpaper(modelData.name) : ""
       }
 
@@ -33,6 +37,15 @@ Variants {
           }
         }
       }
+      
+      Connections {
+        target: WallpaperService
+        function onIsInitializedChanged() {
+          if (WallpaperService.isInitialized) {
+            updateWallpaper()
+          }
+        }
+      }
 
       color: Color.transparent
       screen: modelData