feat(theme): use wp_get_environment_type for WP_ENV (#298)

* fix(EnvironmenVariable): use wp 5.5 core function

details: https://make.wordpress.org/core/2020/07/24/new-wp_get_environment_type-function-in-wordpress-5-5/

* revert(componentLogServer)

* fix(EnvironmentVariables): wp 5.5 core compatibilty

* fix(EnvironmentVariables): removed lint errors

functions.php

@@ -7,7 +7,9 @@
 require_once __DIR__ . '/vendor/autoload.php';
 
 if (!defined('WP_ENV')) {
-    define('WP_ENV', 'production');
+    define('WP_ENV', function_exists('wp_get_environment_type') ? wp_get_environment_type() : 'production');
+} elseif (!defined('WP_ENVIRONMENT_TYPE')) {
+    define('WP_ENVIRONMENT_TYPE', WP_ENV);
 }
 
 // Check if the required plugins are installed and activated.