Fix: pt_br translation and adding pt to knoledg-add (#4674)

### What problem does this PR solve?

Fix Portuguese (Brazil) translation
Adding portuguese to Knowledge adding settings.

### Type of change

- [X] Bug Fix (non-breaking change which fixes an issue)
- [X] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>

web/src/pages/add-knowledge/components/knowledge-setting/configuration.tsx

@@ -76,6 +76,7 @@ const ConfigurationForm = ({ form }: { form: FormInstance }) => {
           <Option value="English">{t('english')}</Option>
           <Option value="Chinese">{t('chinese')}</Option>
           <Option value="Vietnamese">{t('vietnamese')}</Option>
+          <Option value="Portuguese (Brazil)">{t('portugueseBr')}</Option>
         </Select>
       </Form.Item>
       <Form.Item