Refactoring PagedOrientationHandler to extract functions from to quickstep

This CL extracts RecentsView methods from PagedOrientationHandler to RecentsPagedOrientationHandler. It will allow to have quickstep specific components in the newer interface, like IconAppChipView.

Bug: 320633351
Flag: N/A
Test: atest NexusLauncherTests
Test: atest TaplTestsSplitscreen
Test: atest TaplTestsQuickstep
Change-Id: Ie7de23bddccbdb8eac93eff66a5d929f5bf0ee3a