Returns array instead of string with Livewire 1.0 and up

[mokhosh]

Describe the bug
When I use simple selects with Liwewire I have no problem. But with Choices I get an Array as the value instead of a string.

To Reproduce
Steps to reproduce the behavior:

1. Create a simple Laravel Livewire project
2. Use s simple Choices select element
3. Get the value of the select