Update animations for TM-QPR: Overview > OverviewSplitSelect transition

This change updates the Overview > OverviewSplitSelect animation to the latest spec. This is a re-upload of a previous change, ag/19464657, but no longer will cause the b/241165022 issue.

Includes:
- New timings
- Task thumbnails slide in with an "overshoot" animation
- Icons fade out and fade in appropriately
- SplitInstructionsView has a new compound "unfold" animation

Bug: 236760307
Test: Manual on tablet. Made sure the b/241165022 issue is fixed.
Change-Id: Ia22f6b6d7b9474b782e693fae2320a34a2985b18