64edc22c8b
This ensures the taskbar hotseat aligns with the home screen hotseat, as the latter supports empty cells. When in apps, the taskbar still collapses the empty cells. Test: Turn off hotseat predictions, remove some hotseat items, and ensure the taskbar hotseat spreads out when on home. Bug: 179886115 Bug: 171917176 Change-Id: I6047c3c5691685edcd8b3519e0305812b1295550