VisD update for the PipAppIconOverlay 2/N

- Pass the up-to-dated app icon size from Launcher to WMShell
    this is for non-auto-enter-pip cases
- For auto-enter-pip, use the DeviceProfile#allAppsIconSizePx directly

Video: http://recall/-/aaaaaabFQoRHlzixHdtY/ha3ebrRk0hAEyU8GSWBrYE
Bug: Bug: 271912318
Test: manual with 4x4 and 5x5 grid, see the video
Change-Id: Iaad26758a25c6cb3832a2da10e15c53e72de0ce5