fix(subsonic): find lyrics by artist or albumartist (#4093)

* find artist by multivalued exact match, instead of 'artist' field

* check if lyrics are not empty

* refactor(filters): rename function to better reflect its purpose

Signed-off-by: Deluan <deluan@navidrome.org>

---------

Signed-off-by: Deluan <deluan@navidrome.org>
Co-authored-by: Deluan <deluan@navidrome.org>

server/subsonic/filter/filters.go

@@ -108,12 +108,19 @@ func SongsByRandom(genre string, fromYear, toYear int) Options {
 	return addDefaultFilters(options)
 }
 
-func SongWithArtistTitle(artist, title string) Options {
+func SongWithLyrics(artist, title string) Options {
 	return addDefaultFilters(Options{
-		Sort:    "updated_at",
-		Order:   "desc",
-		Max:     1,
-		Filters: And{Eq{"artist": artist, "title": title}},
+		Sort:  "updated_at",
+		Order: "desc",
+		Max:   1,
+		Filters: And{
+			Eq{"title": title},
+			NotEq{"lyrics": "[]"},
+			Or{
+				persistence.Exists("json_tree(participants, '$.albumartist')", Eq{"value": artist}),
+				persistence.Exists("json_tree(participants, '$.artist')", Eq{"value": artist}),
+			},
+		},
 	})
 }