Changed behavior of domains list so that it does not return configured redirects as redirects for default domain

module/Core/src/Config/EmptyNotFoundRedirectConfig.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\Config;
+
+final class EmptyNotFoundRedirectConfig implements NotFoundRedirectConfigInterface
+{
+    public function invalidShortUrlRedirect(): ?string
+    {
+        return null;
+    }
+
+    public function hasInvalidShortUrlRedirect(): bool
+    {
+        return false;
+    }
+
+    public function regular404Redirect(): ?string
+    {
+        return null;
+    }
+
+    public function hasRegular404Redirect(): bool
+    {
+        return false;
+    }
+
+    public function baseUrlRedirect(): ?string
+    {
+        return null;
+    }
+
+    public function hasBaseUrlRedirect(): bool
+    {
+        return false;
+    }
+}