Feat: Display a separate chat multi-model comparison page #3221 (#9461)

### What problem does this PR solve?
Feat: Display a separate chat multi-model comparison page #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/components/llm-setting-items/next.tsx

@@ -78,7 +78,6 @@ export function LlmSettingFieldItems({
             <FormLabel>{t('model')}</FormLabel>
             <FormControl>
               <SelectWithSearch
-                allowClear
                 options={options || modelOptions}
                 {...field}
               ></SelectWithSearch>