Background not matching on transitions in dark mode

[TinfoilSubmarine]

The background is white when I transition between screens on Android 14. It was matching with c5cf18f, so I think b706b94 broke it. It looks like app/src/main/res/values/themes.xml changed at that point and that's what did it. I think there may be a better way to do this than to pull in com.google.android.material just for this though...