ENYO-3074: Removed calls to preventTap in dragfinish handlers

Issue
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A `tap` event will be sent after a `dragfinish` event in a dragging context. The synthesized `dragfinish` no longer provides a `preventTap` method as part of this fix.

Fix
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Calls to `preventTap` have been removed from controls that handle `dragfinish`.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>