refactor: remove status_code from response classes and update related tests

tests/Http/Responses/NotFoundResponseTest.php

@@ -12,7 +12,6 @@ class NotFoundResponseTest extends Unit
         $response = new NotFoundResponse('/api/resource', ['key' => 'value']);
 
         $expected = [
-            'status_code' => 404,
             'message' => 'The requested resource /api/resource was not found.',
             'context' => ['key' => 'value'],
         ];

tests/Http/Responses/ServerErrorResponseTest.php

@@ -19,7 +19,7 @@ class ServerErrorResponseTest extends Unit
             $response = new ServerErrorResponse($e, ['operation' => 'data_processing']);
 
             $expected = [
-                'status_code' => 500,
+                'code' => 500,
                 'message' => 'A Test Error occurred.',
                 'context' => [
                     'operation' => 'data_processing'
@@ -35,13 +35,15 @@ class ServerErrorResponseTest extends Unit
 
     public function testToArrayNotInDevMode(): void
     {
+        Config::set('app.dev_mode', false);
+
         try {
             throw new \Exception('A Test Error occurred.');
         } catch (\Exception $exception) {
             $response = new ServerErrorResponse($exception);
 
             $expected = [
-                'status_code' => 500,
+                'code' => 500,
                 'message' => 'An internal server error occurred.',
             ];
 
@@ -51,13 +53,15 @@ class ServerErrorResponseTest extends Unit
 
     public function testToArrayIfCodeIsSet(): void
     {
+        Config::set('app.dev_mode', false);
+
         try {
             throw new \Exception('A Test Error occurred.', 1234);
         } catch (\Exception $exception) {
             $response = new ServerErrorResponse($exception);
 
             $expected = [
-                'status_code' => 1234,
+                'code' => 1234,
                 'message' => 'An internal server error occurred.',
             ];
 
@@ -75,7 +79,7 @@ class ServerErrorResponseTest extends Unit
             $response = new ServerErrorResponse($exception);
 
             $expected = [
-                'status_code' => 1234,
+                'code' => 1234,
                 'message' => 'A Test Error occurred.',
                 'file' => $exception->getFile(),
                 'line' =>  $exception->getLine(),