fix: failed to modify source transform

Author: HardyNLee

packages/webgal/src/Core/controller/stage/pixi/PixiController.ts

@@ -73,16 +73,16 @@ export default class PixiStage {
     const targetPosition = target.position;
     if (target.scale) Object.assign(targetScale, source.scale);
     if (target.position) Object.assign(targetPosition, source.position);
+    Object.assign(target, source);
+    target.scale = targetScale;
+    target.position = targetPosition;
     if (convertAlpha) {
       const sourceAlpha = source.alpha;
       if (sourceAlpha !== undefined) {
-        source.alpha = 1;
-        (source as any).alphaFilterVal = sourceAlpha;
+        target.alpha = 1;
+        (target as any).alphaFilterVal = sourceAlpha;
       }
     }
-    Object.assign(target, source);
-    target.scale = targetScale;
-    target.position = targetPosition;
   }
 
   /**