Fix bug where view stays invisible due to view recycling before it gets reset.

Repo steps:
* Drag item out of folder into a space where it won't fit (ie. full workspace)
* Drop item before folder finishes closing

The issue is that the drop completes and we unbind the folder contents
before the postDelayed callback runs to set the view back to visible.

Bug: 153267452
Change-Id: I0bd4e41cc6dda8b908eed3c8789ced54da4ac38a