Do not change layering for non live tile tasks rendering

TaskViewSimulator#onBuildTargetParams is called for every single task rendering. Given the layering change doesn't work for the non live tile case (and we shouldn't change the layering in that case anyways), an additional check is added to prevent that from happening

Fixes: 242593058
Test: launch overview from home and app, and make sure that in both cases, task launch animation is intact
Change-Id: Ia242dc767499689547dfa8acae56d39e9b0c3189