Fix PluginManagerBase PHPStan-0 issues

+++ b/core/lib/Drupal/Component/Plugin/PluginManagerBase.php
@@ -94,12 +94,40 @@ public function createInstance($plugin_id, array $configuration = []) {
+    throw new \BadMethodCallException(get_class() . '::getFallbackPluginId() not implemented.');

get_class() without arguments is deprecated in PHP 8.3, self::class should be used instead

Follow-up 🐛 Fix deprecated overloaded function usage in PHP 8.3 Fixed