When launching Wallpaper & Style from the settings search, we should also append the launch source information to the intent. The major purpose if for logging. So that we know then entrypoint of the Wallpaper & Style app. Test: Manually tested that the intent contains the extra we need Bug: 368052505 Flag: EXEMPT bugfix Change-Id: I9af663dad7cb79bfe74431e6a61cd34393e60dbd