fix(setting):修复主图尺寸自定义值处理逻辑

- 限制自定义值处理仅在activeIndex为0时执行- 添加调试日志以便追踪执行路径- 使用深拷贝确保提交数据不被意外修改
-保持原有表单验证逻辑完整性

frontend/src/views/Setting/index.vue

@@ -373,21 +373,23 @@ const getConfig =  async (typeValue)=>{
         formData[item] =  resultPHP.data.configs[item]
       })
 
-    console.log(formData);
     const presetSizes = mainImageSizeList.value.map(item => item.value);
     const receivedSizes = formData.basic_configs.main_image_size ? [...formData.basic_configs.main_image_size] : [];
 
     // 分离自定义值
     const customValues = receivedSizes.filter(v => !presetSizes.includes(v));
-    if (customValues.length > 0) {
+    if (customValues.length > 0 && activeIndex.value == 0) {
       customInput.value = customValues[0]; // 保留第一个自定义值
       // 更新选中状态
+      console.log('111')
       formData.basic_configs.main_image_size = receivedSizes
           .filter(v => presetSizes.includes(v))
           .concat('custom');
     } else {
+      console.log('222')
       formData.basic_configs.main_image_size = receivedSizes;
     }
+    console.log(formData.basic_configs.main_image_size);
   }
 
 }
@@ -460,9 +462,7 @@ const saveSetting = async (index) => {
       if(! cameraConfigRef.value.save()) return false;
     }
   }
-  const submitData = {
-    ...formData
-  };
+  const submitData = JSON.parse(JSON.stringify(formData));
   if(index === 0) {
     if (formData.basic_configs.main_image_size.length === 0) {
       ElMessage.error('请选择主图尺寸！');