[Bug Report] bot can't play shorts video

### Bug Description

bot can't play shorts video.

This sounds like a really simple issue since YouTube Shorts were released few ~~years~~ months ago, but I couldn't find a same issue by searching "short" or "shorts". so I'm reporting this.
Sorry if there's already the same issue that I missed.

### Steps to Reproduce

1. !play https://www.youtube.com/shorts/V6Qipms13VE
2. bot says "Error loading: Unknown file format."

### Expected Result

bot starts playing shorts video just like usual YouTube video.

### Debug Output

```
System Properties:
java.version = 11.0.13
java.vm.name = OpenJDK 64-Bit Server VM
java.vm.specification.version = 11
java.runtime.name = OpenJDK Runtime Environment
java.runtime.version = 11.0.13+8-Ubuntu-0ubuntu1.20.04
java.specification.version = 11
os.arch = amd64
os.name = Linux

JMusicBot Information:
Version = 0.3.6
Owner = 241578268749201408
Prefix = !
AltPrefix = null
MaxSeconds = 0
NPImages = false
SongInStatus = false
StayInChannel = true
UseEval = false
UpdateAlerts = true

Dependency Information:
JDA Version = 4.3.0_324
JDA-Utilities Version = 3.0.5
Lavaplayer Version = 1.3.78

Runtime Information:
Total Memory = 17
Used Memory = 13

Discord Information:
ID = 418666605262798848
Guilds = 12
Users = 5
```

### Additional Info

You can workaround this issue by changing the URL like following:

https://www.youtube.com/shorts/V6Qipms13VE
-> https://www.youtube.com/watch?v=V6Qipms13VE

### Checklist

- [X] I have looked for information about this [within the documentation](https://jmusicbot.com/)
- [X] I have searched for similar issues [on the issues page](https://github.com/jagrosh/MusicBot/issues?q=is%3Aissue)
- [X] I am running the latest version of the bot: 

Begin with the !play command's URL handling and the Lavaplayer integration; reproduce the failure with the supplied Shorts URL and compare it with the watch URL workaround. Done means the supplied /shorts URL loads and plays through the bot without requiring URL conversion, with existing playback behavior preserved.

Written by the indexing model from the issue text.