Fix backdrop not clearing between tabs (#500)

## Description
Follow up to #476 to clear the backdrop when switching tabs

### Related issues
Fixes #499

app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderLiveTv.kt

@@ -31,6 +31,7 @@ import com.github.damontecres.wholphin.data.ServerRepository
 import com.github.damontecres.wholphin.data.model.BaseItem
 import com.github.damontecres.wholphin.data.model.GetItemsFilter
 import com.github.damontecres.wholphin.preferences.UserPreferences
+import com.github.damontecres.wholphin.services.BackdropService
 import com.github.damontecres.wholphin.services.NavigationManager
 import com.github.damontecres.wholphin.ui.components.CollectionFolderGrid
 import com.github.damontecres.wholphin.ui.components.ErrorMessage
@@ -59,6 +60,7 @@ class LiveTvCollectionViewModel
         val serverRepository: ServerRepository,
         val navigationManager: NavigationManager,
         val rememberTabManager: RememberTabManager,
+        val backdropService: BackdropService,
     ) : ViewModel(),
         RememberTabManager by rememberTabManager {
         val recordingFolders = MutableLiveData<List<TabId>>()
@@ -106,6 +108,7 @@ fun CollectionFolderLiveTv(
     LaunchedEffect(selectedTabIndex) {
         logTab("livetv", selectedTabIndex)
         viewModel.saveRememberedTab(preferences, destination.itemId, selectedTabIndex)
+        viewModel.backdropService.clearBackdrop()
     }
     val onClickItem = { position: Int, item: BaseItem ->
         viewModel.navigationManager.navigateTo(item.destination())

app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderMovie.kt

@@ -65,6 +65,7 @@ fun CollectionFolderMovie(
     LaunchedEffect(selectedTabIndex) {
         logTab("movie", selectedTabIndex)
         preferencesViewModel.saveRememberedTab(preferences, destination.itemId, selectedTabIndex)
+        preferencesViewModel.backdropService.clearBackdrop()
     }
 
     var showHeader by rememberSaveable { mutableStateOf(true) }

app/src/main/java/com/github/damontecres/wholphin/ui/detail/CollectionFolderTv.kt

@@ -64,6 +64,7 @@ fun CollectionFolderTv(
     LaunchedEffect(selectedTabIndex) {
         logTab("tv", selectedTabIndex)
         preferencesViewModel.saveRememberedTab(preferences, destination.itemId, selectedTabIndex)
+        preferencesViewModel.backdropService.clearBackdrop()
     }
 
     val onClickItem = { item: BaseItem ->

app/src/main/java/com/github/damontecres/wholphin/ui/detail/FavoritesPage.kt

@@ -82,6 +82,7 @@ fun FavoritesPage(
             NavDrawerItem.Favorites.id,
             selectedTabIndex,
         )
+        preferencesViewModel.backdropService.clearBackdrop()
     }
     var showHeader by rememberSaveable { mutableStateOf(true) }
 

app/src/main/java/com/github/damontecres/wholphin/ui/detail/series/SeriesOverview.kt

@@ -46,7 +46,6 @@ import com.github.damontecres.wholphin.util.LoadingState
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 import org.jellyfin.sdk.model.api.BaseItemKind
-import org.jellyfin.sdk.model.api.ImageType
 import org.jellyfin.sdk.model.api.MediaType
 import org.jellyfin.sdk.model.api.PersonKind
 import org.jellyfin.sdk.model.extensions.ticks
@@ -298,13 +297,6 @@ fun SeriesOverview(
                     chosenStreams = chosenStreams,
                     peopleInEpisode = peopleInEpisode,
                     position = position,
-                    backdropImageUrl =
-                        remember {
-                            viewModel.imageUrl(
-                                series.id,
-                                ImageType.BACKDROP,
-                            )
-                        },
                     firstItemFocusRequester = firstItemFocusRequester,
                     episodeRowFocusRequester = episodeRowFocusRequester,
                     castCrewRowFocusRequester = castCrewRowFocusRequester,

app/src/main/java/com/github/damontecres/wholphin/ui/detail/series/SeriesOverviewContent.kt

@@ -74,7 +74,6 @@ fun SeriesOverviewContent(
     chosenStreams: ChosenStreams?,
     peopleInEpisode: List<Person>,
     position: SeriesOverviewPosition,
-    backdropImageUrl: String?,
     firstItemFocusRequester: FocusRequester,
     episodeRowFocusRequester: FocusRequester,
     castCrewRowFocusRequester: FocusRequester,

app/src/main/java/com/github/damontecres/wholphin/ui/preferences/PreferencesViewModel.kt

@@ -15,6 +15,7 @@ import com.github.damontecres.wholphin.data.model.NavPinType
 import com.github.damontecres.wholphin.preferences.AppPreferences
 import com.github.damontecres.wholphin.preferences.resetSubtitles
 import com.github.damontecres.wholphin.preferences.updateSubtitlePreferences
+import com.github.damontecres.wholphin.services.BackdropService
 import com.github.damontecres.wholphin.services.NavigationManager
 import com.github.damontecres.wholphin.ui.detail.DebugViewModel.Companion.sendAppLogs
 import com.github.damontecres.wholphin.ui.launchIO
@@ -37,6 +38,7 @@ class PreferencesViewModel
         private val api: ApiClient,
         val preferenceDataStore: DataStore<AppPreferences>,
         val navigationManager: NavigationManager,
+        val backdropService: BackdropService,
         private val rememberTabManager: RememberTabManager,
         private val serverRepository: ServerRepository,
         private val navDrawerItemRepository: NavDrawerItemRepository,