fix(discord-plugin): handle album name padding if length < 2 (#2903)

Author: daika7ana

src/plugins/discord/main.ts

@@ -154,15 +154,14 @@ export const backend = createBackend<
     // @see https://discord.com/developers/docs/topics/gateway#activity-object
     // not all options are transfered through https://github.com/discordjs/RPC/blob/6f83d8d812c87cb7ae22064acd132600407d7d05/src/client.js#L518-530
     const hangulFillerUnicodeCharacter = '\u3164'; // This is an empty character
-    if (songInfo.title.length < 2) {
-      songInfo.title += hangulFillerUnicodeCharacter.repeat(
-        2 - songInfo.title.length,
-      );
-    }
-    if (songInfo.artist.length < 2) {
-      songInfo.artist += hangulFillerUnicodeCharacter.repeat(
-        2 - songInfo.title.length,
-      );
+    const paddedInfoKeys: (keyof SongInfo)[] = ['title', 'artist', 'album'];
+    for (const key of paddedInfoKeys) {
+      const keyLength = (songInfo[key] as string)?.length;
+      if (keyLength < 2) {
+        (songInfo[key] as string) += hangulFillerUnicodeCharacter.repeat(
+          2 - keyLength,
+        );
+      }
     }
 
     // see https://github.com/th-ch/youtube-music/issues/1664