There is no validation for configuring queue names in HangfireServer option

Because the queue name has validation : 'A queue name that consists only of lowercase, letters, digits and underscores.'

However, when setup HangfireServer option, we can configure the invalid queue names.

``` C#
builder.Services.AddHangfireServer(option =>
{
option.Queues = new string[]
{
"DEFAULT",
"&*asd!#",
"QUEUEU!"
};
});
```
The dashboard still can see these queue names and can browse anyone.