refactor: lowercase event name calling twice

Author: ddevsr

system/Events/Events.php

@@ -147,7 +147,8 @@ public static function trigger($eventName, ...$arguments): bool
             static::initialize();
         }
 
-        $listeners = static::listeners($eventName);
+        $listeners      = static::listeners($eventName);
+        $lowerEventName = strtolower($eventName);
 
         foreach ($listeners as $listener) {
             $start = microtime(true);
@@ -158,7 +159,7 @@ public static function trigger($eventName, ...$arguments): bool
                 static::$performanceLog[] = [
                     'start' => $start,
                     'end'   => microtime(true),
-                    'event' => strtolower($eventName),
+                    'event' => $lowerEventName,
                 ];
             }