Update animations for TM-QPR: OverviewSplitSelect > Confirmed transition

This change updates the animation for confirming a split.

Includes:
- New timings
- A new interface, SplitAnimationTimings, that centralizes timing values for splitscreen animations

Fixes: 241126570
Test: Manual
Change-Id: I61339964a7254618b368b17f00fda8f5efb53de4