Partial revert of joomla#43230 (joomla#43930)

Author: Hackwar

administrator/components/com_installer/src/Model/UpdatesitesModel.php

@@ -554,7 +554,7 @@ protected function getListQuery()
 
         // Process select filters.
         $supported = $this->getState('filter.supported');
-        $enabled   = $this->getState('filter.enabled');
+        $enabled   = $this->getState('filter.enabled', '');
         $type      = $this->getState('filter.type');
         $clientId  = $this->getState('filter.client_id');
         $folder    = $this->getState('filter.folder');

administrator/components/com_languages/src/Model/OverridesModel.php

@@ -165,7 +165,13 @@ protected function populateState($ordering = 'key', $direction = 'asc')
         $client          = substr($language_client, -1);
         $language        = substr($language_client, 0, -1);
 
+        // Sets the search filter.
+        $search = $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search');
+        $this->setState('filter.search', $search);
+
         $this->setState('language_client', $language . $client);
+        $this->setState('filter.client', $client ? 'administrator' : 'site');
+        $this->setState('filter.language', $language);
 
         // Add the 'language_client' value to the session to display a message if none selected
         $app->setUserState('com_languages.overrides.language_client', $language . $client);