Window Manager Flag Migration (14/n) (Flips the flag)

Fully change to the new insets mode.

Bug: 118118435
Test: atest InsetsSourceProviderTest InsetsStateControllerTest
            InsetsPolicyTest WindowStateTests CommandQueueTest
            RegisterStatusBarResultTest InsetsFlagsTest
            LightBarControllerTest RegisterStatusBarResultTest
            ViewRootImplTest DisplayPolicyLayoutTests
            DisplayPolicyInsetsTests DisplayPolicyTests
            TaskSnapshotSurfaceTest
            AnimatedVectorDrawableParameterizedTest

Change-Id: I2041074beb4a6fd9da189c1d9127fc0ed1999770