feat: 优化文件上传逻辑，确保更新的文件 ID 不为空

src/components/upload/index.vue

@@ -102,13 +102,12 @@ async function handleCustomRequest({ file, onProgress, onFinish, onError }: Uplo
         onProgress({ percent });
       }
     });
-
     // 直接修改 file 对象的 id，NaiveUI 会自动同步到 fileList
     file.id = fileId;
     file.status = 'finished';
     file.url = fileId;
 
-    const newFileIds = [...props.modelValue, fileId];
+    const newFileIds = [...props.modelValue, fileId].filter(Boolean);
     emit('update:modelValue', newFileIds);
 
     onFinish();