Split TaskUtils for Go recents

This CL splits the static methods in TaskUtils based off which ones
assume a RecentsView recents implementation. The new TaskViewUtils
is then only used by non-Go recents whereas the generic TaskUtils which
only deals with Task logic is shared.

Bug: 114136250
Test: Build NexusLauncher, l3GoIconRecents
Change-Id: If33d19dbdb421ae805767387a991769166e865c5