title: Parent RecyclerView picks up gestures that were intended to be for the nested RecyclerView
body: <p>I have a vertical <code>RecyclerView</code> and a nested horizontal <code>RecyclerView</code> as one of its children. The inner view is used as an image carousel with a <code>PagerSnapHelper</code>. I'm getting a less than ideal behavior when I try to scroll the inner view horizontally. Sometimes, the parent view picks up the gesture and scrolls vertically even though my intention was to scroll the inner view horizontally. Is there a way to configure the default scroll detector such that horizontal scrolling is smoother?</p>