Is your feature request related to a problem? Please describe.
I often have anime that comes with Sign & Songs subtitles as default. From what I can tell, this subtitle track only contains subtitles for the songs in the episode and do not provide dialogue subtitles. This is pretty useless to me personally as I don't really care about what the intro/outro songs are saying.

What makes it undesirable, is that based off user/system settings in Plex, it may choose the sign|song as the default subtitle stream even if only Japanese/Foreign audio exists - causing the end user to have to change the subtitle track for each episode manually/script if they have subtitles always on/enabled.

Example:

Describe the solution you'd like
I would like a way to do the following:

• Be able to set the default subtitle track based on language and description (or lack of), i.e. I want to be able to set as default another subtitle track that is in English but is not Sign|Song.
• If above is not possible, optionally removing any subtitles with Sign|Song or similar (if other subtitle tracks in the target language exist - i.e. so you won't remove it if it's the only subtitle in the target language) and setting a new default subtitle track based on Language (I want english and it can auto-select the next subtitle track that is in English and make it default)

Describe alternatives you've considered
So far from what I can tell, there is no community plugin to do this feature after my few hours of searching on google/online. Closest I found was this which is similar but opposite of what I want: https://www.reddit.com/r/Tdarr/comments/109yg5s/set_subtitles_as_forced_if_named_signs_songs/

• The links are dead in that thread so I am unable to tell what exactly was done

Additional context
Using Latest Docker Image of Tdarr, version: 2.00.20