Fix translation when focused task or desktop task is dismissed. (3/4)

This CL uses the same logic used for handheld dissmiss translation to fix the following cases when large tile is enabled for desktop task:
- When the LAST focused task is dismissed (i.e., no other task in the grid), translate all large tiles from the right side to the left, to occupy the dismissed focused task position.
- When Desktop Task is dismissed, translate focused task and grid from the left to the right side to occupy the dismissed desktop task position.
- When 2 tasks are visible in recents (i.e., 1 focused task, 1 desktop task) and the user dismisses the desktop task while in Clear All Button page (page 2), the focused task translates when no translation should be done, due to snapping to ClearAllButton page on Tablet. To fix this we introduced a logic in getOffsetToDismissedTask to use the previous page for the calculation when the grid snaps to Clear All Button page.

Bug: 353948136
Fix: 353948182
Flag: com.android.launcher3.enable_large_desktop_windowing_tile
Test: OverviewDesktopTaskImageTest
Change-Id: If8b06410c26a8f817d84ec6a635a66b2941e3ae9