Remove redundant PHP version check for enums

This update simplifies the code by removing the PHP version check before calling the isEnum method. Since the project now requires a PHP version that supports enums, the conditional check is unnecessary. This change enhances readability and maintainability of the code.

src/ClassParam.php

@@ -64,7 +64,7 @@ public function __invoke(string $varName, array $query, InjectorInterface $injec
         assert(class_exists($this->type));
         $refClass = (new ReflectionClass($this->type));
 
-        if (PHP_VERSION_ID >= 80100 && $refClass->isEnum()) {
+        if ($refClass->isEnum()) {
             return $this->enum($this->type, $props, $varName);
         }