When desktop windowing is enable and split is selected, during second app selection apps' scroll was far off on left. There were several things needed to fix this :
1. Hide DesktopTaskView during split select mode by changing splitAlpha
2. Fix min/max scroll calculation by excluding DesktopTaskView in split select mode
3. Exclude DesktopTaskView in updateGridProperties row length calcualtion
Testing: Manually needed to test multiple scenarios
1. Split focused task.
2. Split Even/Odd tasks in top and bottom rows.
3. Split tasks from home screen
4. Split and rotate screen.
5. Split from app icon chip
Test: SplitSelectStateControllerTest, Manual
BUG: 330342294
FIX: 330342294
Flag: com.android.launcher3.enable_large_desktop_windowing_tile
Change-Id: I789873100f42896c9ed3084accb0f6970abcba0c
vinayjoglekar
562ab4d188