Init FloatingIconView properties before fetching drawable.

& Make sure properties are reset when recycled.

This fixes the bug that causes BubbleTextView drawable not to get set.

Bug: 207389002
Test: locally disable loading AdaptiveIcons, ensure BubbleTextView
      drawable always gets drawn for closing animation

Change-Id: Ifdbf3e733e27918c57a5e9b23e5a11b65f8f338c