Fixed Apple Music song embeds. (#9220)

* Fixed Apple Music song embeds  when using a direct song link (vs playlist or album).

* Fixed song embed test.

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Jason Ericson <jasonmarkericson@gmail.com>
Co-authored-by: Samuel Newman <mozzius@protonmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

__tests__/lib/string.test.ts

@@ -378,6 +378,7 @@ describe('parseEmbedPlayerFromUrl', () => {
     'https://music.apple.com/us/playlist/playlistName/playlistId',
     'https://music.apple.com/us/album/albumName/albumId',
     'https://music.apple.com/us/album/albumName/albumId?i=songId',
+    'https://music.apple.com/us/song/songName/songId',
 
     'https://vimeo.com/videoId',
     'https://vimeo.com/videoId?autoplay=0',
@@ -604,6 +605,11 @@ describe('parseEmbedPlayerFromUrl', () => {
       playerUri:
         'https://embed.music.apple.com/us/album/albumName/albumId?i=songId',
     },
+    {
+      type: 'apple_music_song',
+      source: 'appleMusic',
+      playerUri: 'https://embed.music.apple.com/us/song/songName/songId',
+    },
 
     {
       type: 'vimeo_video',