ACMS-3508: PR feedback work to update the logic.

settings/config.settings.php

@@ -37,11 +37,21 @@
 
 // phpcs:ignore
 // Config sync settings.
+// if $settings['config_sync_directory'] isn't set by user the DRS
+// set to the ../config/$site_name and if $drs_override_config_directories
+// is TRUE then it sets to ../config/default.
 $settings['config_sync_directory'] = !$drs_override_config_directories ?
-"../config/$site_name" : "../config/default";
+($settings['config_sync_directory'] ?: "../config/$site_name")
+ : "../config/default";
+
 // Site Studio sync settings.
+// if $settings['site_studio_sync'] isn't set by user the DRS
+// set to the ../sitestudio/$site_name and if
+// $drs_override_site_studio_sync_directories is TRUE
+// then it sets to ../sitestudio/default.
 $settings['site_studio_sync'] = !$drs_override_site_studio_sync_directories ?
-"../sitestudio/$site_name" : "../sitestudio/default";
+($settings['site_studio_sync'] ?: "../sitestudio/$site_name")
+ : "../sitestudio/default";
 
 $split_filename_prefix = 'config_split.config_split';