__apply__: support Frames

(cherry picked from commit 5e4af27)

Author: matmen

ImageScript.js

@@ -942,8 +942,8 @@ export class Image {
 
     /**
      * @private
-     * @param {Image} image
-     * @returns {Image}
+     * @param {Image|Frame} image
+     * @returns {Image|Frame}
      */
     __apply__(image) {
         this.__width__ = image.__width__;
@@ -952,6 +952,9 @@ export class Image {
         this.__u32__ = image.__u32__;
         this.bitmap = image.bitmap;
 
+        if (image instanceof Frame)
+            return Frame.from(this, image.duration);
+
         return this;
     }