fix: historical chats appear in the new user's chat box #256 (#282)

### What problem does this PR solve?

historical chats appear in the new user's chat box

Issue link:#256

### Type of change

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

web/src/locales/en.ts

@@ -269,6 +269,7 @@ export default {
       chatConfigurationDescription:
         ' Here, dress up a dedicated assistant for your special knowledge bases! 💕',
       assistantName: 'Assistant name',
+      assistantNameMessage: 'Assistant name is required',
       namePlaceholder: 'e.g. Resume Jarvis',
       assistantAvatar: 'Assistant avatar',
       language: 'Language',