Fixed an issue where refreshing the login page caused the language settings to become invalid. #249 (#250)

### What problem does this PR solve?

Fixed an issue where refreshing the login page caused the language
settings to become invalid.

Issue link: #249

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/chat/index.tsx

@@ -204,7 +204,7 @@ const Chat = () => {
       <Flex className={styles.chatAppWrapper}>
         <Flex flex={1} vertical>
           <Button type="primary" onClick={handleShowChatConfigurationModal()}>
-            Create an Assistant
+            {t('createAssistant')}
           </Button>
           <Divider></Divider>
           <Flex className={styles.chatAppContent} vertical gap={10}>