Add test with static wallpaper for switchUser

Current test implementations depend on the test device default
wallpaper. Some devices use LiveWallpapers and some use ImageWallpapers,
so this test aims to make it easier to identify if a regression occured
because of the switchUser operation or due to a slower wallpaper on
certain devices.

Bug: 265011565
Test: atest UserLifecycleTests
Change-Id: Ia587b97cd672f76f9a20481124f47840de9fd331