ThemeModeDropdown
fun ThemeModeDropdown(selected: ThemeMode, onSelect: (ThemeMode) -> Unit, label: String, modifier: Modifier = Modifier, enabled: Boolean = true, labels: ThemeModeLabels = ThemeModeLabels())
A labeled dropdown for choosing a ThemeMode, for settings forms where a segmented control does not fit. Built on MenuPicker; the menu's open state is internal UI state.