[Core set api] Bot ignore the api if token contain ";"

### What Red version are you using?

3.4.12

### Cog name

Core

### Command name

set api travitia api_key tok;en

### What did you expect to happen?

I expect the bot to successfully add the api token.

### What actually happened?

The bot just ignores it, and paste help.

### How can we reproduce this error?

For the example, my token is an unfortunate API token, it contain a comma ";" inside. For obvious security reason I will not paste it here so I will call it `tok;en` to represent the unusual token.

- [p]set api travitia api_key tok;en
- [p]set api travitia api_key,tok;en
- [p]set api travitia api_key;tok;en
- [p]set api travitia api_key "tok;en"

I tried all the commands above, no luck, still the same results.

### Anything else?

_No response_