fix(KAN-14): preserve template inheritance and project data

app/Http/Requests/StoreStandaloneProjectTemplateRequest.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Requests;
+
+use App\Http\Requests\Concerns\ValidatesProjectTemplateConfiguration;
+
+class StoreStandaloneProjectTemplateRequest extends StoreProjectTemplateRequest
+{
+    use ValidatesProjectTemplateConfiguration;
+
+    public function rules(): array
+    {
+        return [...parent::rules(), ...$this->configurationRules()];
+    }
+}