fix: set distributed_inference_across_workers to false when selectingt vox-box

src/pages/llmodels/config/types.ts

@@ -30,7 +30,7 @@ export interface ListItem {
 }
 
 export interface FormData {
-  backend?: string;
+  backend: string;
   size?: number;
   quantization?: number;
   categories?: string[];