Fix for: BHV-10816

The sample was using the enyo.Panels property `index` and was experiencing collision. The fact it was working before was a fluke. A recent change updates the `index` to the correct panel index and was overwriting the sample's intended variable. Simply avoiding this collision fixes the problem.

Enyo-DCO-1.1-Signed-Off-By: Cole Davis (cole.davis@lge.com)