ACP2E-295: Product swatch base image thumb js issue fixes

Author: nishant04412

app/code/Magento/Swatches/view/base/web/js/swatch-renderer.js

@@ -1248,9 +1248,10 @@ define([
          */
         _setImageType: function (images) {
             var initial = this.options.mediaGalleryInitial[0].img;
+            var mediaGalleryInitial = this.options.mediaGalleryInitial;
 
-            if (images[0].img === initial) {
-                images = $.extend(true, [], this.options.mediaGalleryInitial);
+            if (images[0].img === initial && (images.length === mediaGalleryInitial.length)) {
+                images = $.extend(true, [], mediaGalleryInitial);
             } else {
                 images.map(function (img) {
                     if (!img.type) {