Fix unsetMethod

Method keys aren't in lower case format, there is no way to unset method in camel case format automaticly generated from scope methods.
This commit fixes issues for hooks e.g. like this:
```php
final class MyCustomHook implements ModelHookInterface
{
    public function run(ModelsCommand $command, Model $model): void
    {
        if ($model instanceof MyModel) {
            $command->unsetMethod('getAssoc', 'Collection');
        }
    }
}
```