fix AddLinkHeaderProcessor initialization for Laravel

Author: LaurentHuzard

src/Laravel/ApiPlatformProvider.php

@@ -422,12 +422,10 @@ public function register(): void
                 );
             }
 
-            return new AddLinkHeaderProcessor($decorated, new HttpHeaderSerializer());
-        });
+            $decorated = new AddLinkHeaderProcessor($decorated, new HttpHeaderSerializer());
 
-        $this->app->singleton(LinkedDataPlatformProcessor::class, function (Application $app) {
             return new LinkedDataPlatformProcessor(
-                $app->make(AddLinkHeaderProcessor::class), // Original service
+                $decorated,
                 $app->make(ResourceClassResolverInterface::class),
                 $app->make(ResourceMetadataCollectionFactoryInterface::class)
             );

src/State/Tests/Processor/LinkedDataPlatformProcessorTest.php

@@ -65,7 +65,7 @@ protected function setUp(): void
         $this->decorated->method('process')->willReturn(new Response());
     }
 
-    public function testHeadersAcceptPostIsReturnWhenPostAllowed(): void
+    public function testHeadersAcceptPostIsReturnedWhenPostAllowed(): void
     {
         $operation = new Get('/dummy{._format}', class: Dummy::class);