fix: allow OpenSubsonic extension check on low security servers

[mytja]

Some servers, such as Nextcloud/Owncloud Music don't support token-based authentication. This made lyrics unavailable to clients connecting to such servers. This commit fixes this behaviour, allowing clients with passwords to ping server to query if it's OpenSubsonic and query all available extensions.

Before:

No time-synchronized lyrics

Now:

[mytja]

I think I have another problem, but I don't think it's related to my commit. However, I might be totally wrong.

After switching to a song with no lyrics available on the server (in my case "The Night We Met") from a song (in my case "Offline") which has lyrics available both from getLyrics endpoint (plain text lyrics), as well as getLyricsFromSongId endpoint (timestamped), the app would at first crash before this commit (5062adf) was implemented. Now it doesn't crash, it only shows plain text lyrics from getLyrics endpoint from previous song ("Offline") on a song without lyrics ("The Night We Met").

Attaching the screen recording to better describe the situation

screen.mp4