Pulse state should always show ambient wallpaper

Otherwise wallpaper wouldn't be set to AOD when the device pulses
and always on is off.

Bug: 78606979
Test: manual
Test: atest packages/SystemUI/tests/src/com/android/systemui/doze/DozeWallpaperStateTest.java
Change-Id: Ic40c18252cd6cb06ff6fd0d79ec3f1de16a1add5