Set the default value of the `firewall.all_middleware` config

[vlasscontreras]

Prevent errors during installation due the config value being null before publishing config files.

[denisdulici]

The current one works fine for me on a clean Laravel installation:

Please, provide the steps to reproduce the issue.

[vlasscontreras]

If affects projects with cached config entries, reproducible with the following flow:

laravel new app && cd app
php artisan config:cache
composer require akaunting/firewall

[denisdulici]

Then your workflow is wrong, you should first install firewall then cache config.

[vlasscontreras]

Not all projects start having this package because it could have been discovered even after going to production and is most likely to have cached config. That's why I suggested this change.

Anyway, thank you for your feedback.