Fix letterbox issue when auto-enter-pip from landscape

Included in this CL
- Skip layout of window when in transition to PiP mode
- Pass display cutout info via TaskInfo
- Removed TaskInfoCompat

Video: http://recall/-/aaaaaabFQoRHlzixHdtY/bpKcGg1eoOo5Jz5U6IwBYK
Bug: 191310680
Test: manual, auto-enter-pip from landscape with source rect hint being
      turned on, see the video
Change-Id: Ie657d15d9edb9d07555bd166b5919bb12cb217e6