Window Manager Flag Migration (7/n)

Let the client control the window layout about avoiding insets.

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

Change-Id: I63c778b35347ac104c7ec335bc6dc82c2c55018d