B2B-2067: Gallery Image is not saving the remote storage file on to local

- Added fix for the test on Gallery class

Author: avattam06

app/code/Magento/Catalog/Block/Product/Gallery.php

@@ -122,9 +122,9 @@ public function getImageFile()
     public function getImageWidth()
     {
         $file = $this->getCurrentImage()->getPath();
-
+        $fileStat = $this->getMediaDirectory()->stat($file);
         if ($this->_filesystem->getDirectoryRead(DirectoryList::MEDIA)->isFile($file)) {
-            $size = getimagesize($file);
+            $size = $fileStat['size'];
             if (isset($size[0])) {
                 if ($size[0] > 600) {
                     return 600;