fix(extend): 修复了解析不到为null不为数组的问题

tests/Unit/ExtendServiceTest.php

@@ -15,6 +15,14 @@ use Singularity\HDK\Core\Service\UtilsService;
 
 /** @var ExtendService $service */
 $service = make(ExtendService::class, ['utils' => new UtilsService()]);
+it('asserts no parameters can be parsed.', function () use ($service) {
+    $service->parse(
+        null,
+        null
+    );
+    $result = $service->getExtends();
+    expect($result)->toBeArray()->toHaveCount(0)->toBe([]);
+})->only();
 it('asserts query parameters can be parsed.', function () use ($service) {
     $result = $service->parse(
         null,