Disable rotation checks in DragDividerToResize

This is a temporary measure to unblock the flicker tests while we work on stabilizing the launcher rotation and rotation checks.

Bug: 349075982
Flag: TEST_ONLY
Test: atest WMShellFlickerServicePlatinumTests:com.android.wm.shell.flicker.service.splitscreen.platinum.DragDividerToResizeGesturalNavLandscape
Change-Id: Iee5c1b7727ce3198da65236926dbdf470655d181