StyledRadioButton is far too opinionated

To get it to behave in a table cell (centered), one needs to override internal container styling that shouldn't be there as a drop-in radio button replacement.

Example:
```
// Override StyledRadioButton default styles
.mx_RadioButton {
justify-content: center;

.mx_RadioButton_content {
display: none;
}

.mx_RadioButton_spacer {
display: none;
}
}
```

To get:

Also, each radio is a flexbox?