ui: show the singular and plural artist rows separately

Track info now lists the Artist field and the plural Artists field as
their own rows, hiding Artists when it would repeat the Artist value.
Keep one Artist sort row, also hidden when it matches the artist name.

app/src/main/kotlin/com/subtracks/ui/components/SongArtist.kt

@@ -9,6 +9,14 @@ internal fun Song.artistSubtitle(): String? = artistSubtitle(artist, artists)
 
 internal fun Song.artistNames(): List<String> = artistNames(artist, artists)
 
+internal fun Song.artistList(): String? =
+    artists
+        .map { it.name }
+        .filter { it.isNotBlank() }
+        .distinct()
+        .joinToString(ARTIST_SEPARATOR)
+        .takeIf { it.isNotEmpty() }
+
 internal fun artistNames(
     artist: String?,
     artists: List<ArtistRef>,

app/src/main/kotlin/com/subtracks/ui/components/SongInfoDialog.kt

@@ -46,20 +46,13 @@ fun SongInfoDialog(
         title = { Text(stringResource(R.string.info)) },
         text = {
             Column(verticalArrangement = Arrangement.spacedBy(6.dp)) {
-                val multipleArtists = song.artistNames().size > 1
-                val regularArtistSort = song.artist?.takeIf { it.isNotBlank() } ?: song.artistRefs.firstOrNull()?.name
+                val artist = song.artist?.takeIf { it.isNotBlank() }
+                val regularArtistSort = artist ?: song.artists.firstOrNull()?.name
                 InfoRow(stringResource(R.string.resources_sort_by_title), song.title)
                 InfoRow(stringResource(R.string.info_sort_title), song.sortName.takeIfDifferentFrom(song.title))
-                InfoRow(
-                    stringResource(
-                        if (multipleArtists) R.string.info_artists else R.string.resources_filter_artist,
-                    ),
-                    song.artistSubtitle(),
-                )
-                InfoRow(
-                    stringResource(if (multipleArtists) R.string.info_artists_sort else R.string.info_artist_sort),
-                    song.artistSort.takeIfDifferentFrom(regularArtistSort),
-                )
+                InfoRow(stringResource(R.string.resources_filter_artist), artist)
+                InfoRow(stringResource(R.string.info_artists), song.artistList().takeIfDifferentFrom(artist))
+                InfoRow(stringResource(R.string.info_artist_sort), song.artistSort.takeIfDifferentFrom(regularArtistSort))
                 InfoRow(stringResource(R.string.resources_filter_album), song.album)
                 InfoRow(stringResource(R.string.info_duration), song.duration?.let(DateUtils::formatElapsedTime))
                 InfoRow(

app/src/main/res/values/strings.xml

@@ -198,7 +198,6 @@
     <string name="info_channels">Channels</string>
     <string name="info_close">Close</string>
     <string name="info_artists">Artists</string>
-    <string name="info_artists_sort">Artists sort</string>
     <string name="info_album_artists">Album artists</string>
     <string name="info_album_artist_sort">Album artist sort</string>
     <string name="info_sort_title">Sort title</string>