Bug: 缩放图片后不能切换的问题

你好，我用Github上的：\demo\2.X\with-plugin-zoom.html
发现图片如果双指放大或缩小时，就不能横向滑动切换图片了，必须双击使图片还原至初始尺寸后才可以切换。
谢谢。

Reproduce the issue using demo/2.X/with-plugin-zoom.html with a pinch gesture, then test whether horizontal switching still fails afterward. Trace the zoom and swipe interaction entry points involved in that demo. Done means images can be switched horizontally after pinch zooming or shrinking, without requiring a double tap to restore the initial size.

Written by the indexing model from the issue text.