WP CLI Throws warning about DISALLOW_FILE_EDIT already being defined.

PHP Warning:  Constant DISALLOW_FILE_EDIT already defined in phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(1334) : eval()'d code on line 138

Apparently the WP_CLI itself is setting the DISALLOW_FILE_EDIT constant, so AIOS needs to check to see if the constant was already set before trying to set it.