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

app/Http/Requests/UpdateProjectTemplateRequest.php

@@ -3,6 +3,7 @@
 namespace App\Http\Requests;
 
 use App\Actions\Projects\DuplicateProjectConfiguration;
+use App\Http\Requests\Concerns\ValidatesProjectTemplateConfiguration;
 use App\Models\ProjectTemplate;
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
@@ -10,6 +11,8 @@ use Illuminate\Validation\Rule;
 
 class UpdateProjectTemplateRequest extends FormRequest
 {
+    use ValidatesProjectTemplateConfiguration;
+
     public function authorize(): bool
     {
         return $this->user()?->can('create-project') ?? false;
@@ -25,8 +28,9 @@ class UpdateProjectTemplateRequest extends FormRequest
         $requiresImpactConfirmation = $projectTemplate?->linkedProjects()->exists() ?? false;
 
         return [
+            ...$this->configurationRules(),
             'name' => ['required', 'string', 'max:255'],
-            'copy_areas' => ['required', 'array', 'min:1'],
+            'copy_areas' => ['present', 'array'],
             'copy_areas.*' => ['string', Rule::in(DuplicateProjectConfiguration::acceptedCopyAreas())],
             'confirm_linked_projects_update' => [
                 Rule::excludeIf(! $requiresImpactConfirmation),