Fix custom blur

[mocca102]

🐛 The bug

• The custom blur hook breaks the click events if and only uf autocompleteClassName consists of multiple class names, ie

  • cio-autocomplete custom-autocomplete-styles

🔁 How to reproduce the bug?

• Selects are broken on the full featured example since it has

  • autocompleteClassName = 'cio-autocomplete custom-autocomplete-styles';

✅ The fix

• Handle multiple class names by splitting and joining them again

[Mudaafi]

lgtm. I don't like how we're relying on a prop called autocompleteClassName to handle blurring since it's not intuitive if they used the Hooks Approach but that's a separate discussion to have. This fix looks good to go.