Add wallpaper support check

Before running this test, it should check if the device supports
wallpaper (since otherwise the test will always fail).

Bug: 230412543
Bug: 240216871
Test: atest WallpaperManagerTest
Change-Id: I7013ebe77b326608097139c7ab06c3a506579e71
Merged-In: I7013ebe77b326608097139c7ab06c3a506579e71
(cherry picked from commit 31a14a79920b16b5991d491bba73686b45334f36)