Overrides do not find 3rd party plugins languages when files are in t…

…he (#19740)

plugin

administrator/components/com_languages/models/strings.php

@@ -74,7 +74,7 @@ public function refresh()
 		$files = array_merge($files, JFolder::files($base . '/templates', $language . '.*ini$', 3, true));
 
 		// Parse language directories of plugins.
-		$files = array_merge($files, JFolder::files(JPATH_PLUGINS, $language . '.*ini$', 3, true));
+		$files = array_merge($files, JFolder::files(JPATH_PLUGINS, $language . '.*ini$', 4, true));
 
 		// Parse all found ini files and add the strings to the database cache.
 		foreach ($files as $file)