Classnaming missing component name

__Expected behavior:__
Wrong or Missing classnames if I follow the basic example from docu.
The basic example output (https://cssinjs.org/react-jss/?v=v10.3.0#basic ) should be
```html

Submit


```
__Describe the bug:__
if using the basic example from the name of the component/file isn´t included in classnames as described here https://cssinjs.org/react-jss/?v=v10.3.0#basic

output is:
```html

sdsds

```

__Codesandbox link:__
https://codesandbox.io/s/condescending-bush-lzdjv?fontsize=14&hidenavigation=1&theme=dark

__Versions (please complete the following information):__
- jss: 10.4.0
- Browser [e.g. chrome, safari]: chrome
- OS [e.g. Windows, macOS]: mac

Start by reproducing the reported output in the linked CodeSandbox and compare it with the basic example in the react-jss v10.3.0 documentation. Trace the class-name generation entry point used by that example; done means the rendered button and span include the component name as shown in the expected HTML.

Written by the indexing model from the issue text.