Split out logic in RecentsViewStateController.

Split logic in RecentsViewStateController based off code that should be
shared and code that should not between Go icon recents and regular
quickstep recents. The Go version will maintain changes in
scale/translationY as per normal recents.

Bug: 114136250
Test: Manual test NexusLauncher, Launcher3GoQuickstep
Test: Build Launcher3GoIconRecents (no longer crashes immediately!)
Change-Id: Id060d6f8f0b68edee4becdf6b91b876bb8dbcefb