remove dragged style after done

* fix while debugging #1936
* no longer leave min-width & will-change after a drag

Author: adumesny

src/dd-draggable.ts

@@ -56,7 +56,7 @@ export class DDDraggable extends DDBaseImplement implements HTMLElementExtendOpt
   /** @internal */
   protected helperContainment: HTMLElement;
   /** @internal properties we change during dragging, and restore back */
-  protected static originStyleProp = ['transition', 'pointerEvents', 'position', 'left', 'top'];
+  protected static originStyleProp = ['transition', 'pointerEvents', 'position', 'left', 'top', 'minWidth', 'willChange'];
   /** @internal pause before we call the actual drag hit collision code */
   protected dragTimeout: number;