feat: navigate back to Series screen when exiting playback

Pop the EpisodeRoute from the navigation stack when playback starts,
so finishing PlayerActivity returns to the SeriesScreen instead of
the EpisodeScreen.

app/src/main/java/hu/bbara/purefin/app/content/episode/EpisodeComponents.kt

@@ -74,6 +74,7 @@ internal fun EpisodeDetails(
     episode: Episode,
     downloadState: DownloadState,
     onDownloadClick: () -> Unit,
+    onPlaybackStarted: () -> Unit,
     modifier: Modifier = Modifier
 ) {
     val scheme = MaterialTheme.colorScheme
@@ -84,6 +85,7 @@ internal fun EpisodeDetails(
             val intent = Intent(context, PlayerActivity::class.java)
             intent.putExtra("MEDIA_ID", episode.id.toString())
             context.startActivity(intent)
+            onPlaybackStarted()
         }
     }
 

app/src/main/java/hu/bbara/purefin/app/content/episode/EpisodeScreen.kt

@@ -69,6 +69,7 @@ fun EpisodeScreen(
         episode = episode.value!!,
         downloadState = downloadState.value,
         onBack = viewModel::onBack,
+        onPlaybackStarted = viewModel::onBack,
         onDownloadClick = onDownloadClick,
         modifier = modifier
     )
@@ -79,6 +80,7 @@ private fun EpisodeScreenInternal(
     episode: Episode,
     downloadState: DownloadState,
     onBack: () -> Unit,
+    onPlaybackStarted: () -> Unit,
     onDownloadClick: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
@@ -108,6 +110,7 @@ private fun EpisodeScreenInternal(
                 episode = episode,
                 downloadState = downloadState,
                 onDownloadClick = onDownloadClick,
+                onPlaybackStarted = onPlaybackStarted,
                 modifier = Modifier
                     .fillMaxWidth()
                     .padding(horizontal = 16.dp)