Avoid recreating views in SmartSpaceComplicationViewHolder.

Also fixed the length of ComplicationHostViewController.TAG (30 -> 23).

Note: we'll still get multiple instances of the same type of view, when
updateComplications is called multiple times.

Bug: 231251252
Bug: 235625099
Test: on device via added logging
Change-Id: Ia80650dea1cdac7b19b34034b8dc41916134cace