Include on/off state if dual target

If the tile is dual target, it means it can be switched, so add the
corresponding on/off text to the stateDescription. This will be used in
the large part of the tile and in the toggle target.

Test: manual, Talkback
Test: atest TileUiStateTest
Fixes: 412321390
Flag: com.android.systemui.qs_ui_refactor_compose_fragment
Change-Id: Ica9dfa594cf7fdb4a0c9564183827a4e64666e4c