Bao Trinh
458c03bf95
When adding a custom module with a name, e.g.:
```jsonc
{
...,
"custom/foo#bar": { },
...
}
```
The custom module does not retain the `bar` class as it should, because
all the classes are replaced with the runtime output:
https://github.com/Alexays/Waybar/blob/1b4a7b02f46c1bce2eafdde2a76f4a3adec6620e/src/modules/custom.cpp#L141-L147
Avoid removing the module instance name class so css class behavior is
consistent between all modules.