Enable sclaled resizing for non-resizeable apps

Flag: com.android.window.flags.enable_windowing_scaled_resizing
Test: atest WMShellUnitTests:VeiledResizeTaskPositionerTest
Test: atest WMShellUnitTests:FluidResizeTaskPositionerTest
Test: atest WMShellUnitTests:DesktopModeWindowDecorViewModelTests
Test: atest WMShellUnitTests:DesktopModeWindowDecorationTests
Test: atest WMShellUnitTests:DragPositioningCallbackUtilityTest
Test: atest WMShellUnitTests:DragPositioningCallbackProviderTests
Test: atest WMShellUnitTests:FixedAspectRatioDragPositioningDecoratorTests
Bug: 319844447
Fixes: 365742430
Fixes: 361095335
Fixes: 352589523

Change-Id: Ie76d9954daf48cd4789d6dc7a8ed62159382f5db