Fix console error when using custom Array prototype functions

[mccahan]

If you've added a function to the Array prototype, using for (value in values) will iterate through the functions attached to the prototype in addition to the values, which can throw a console error. Instead, we should use for (value in values.values()).

To reproduce this issue:

• Create a new blank Laravel project (composer create-project laravel/laravel debugbar-test && cd debugbar-test)
• Install Debugbar (composer require barryvdh/laravel-debugbar --dev)
• Add an Array prototype function to resources/views/welcome.blade.php:

<script>
            Array.prototype.customRemove = function(item) {
                const i = this.indexOf(item)
                if (i > -1) {
                    this.splice(i, 1)
                }
                return this
            }
        </script>

• php artisan serve and load in a browser
• Observe the console error: