fix: reset chat state when creating new dialog (#10380)

### What problem does this PR solve?
issue:
[Question]: New Chat Creation Renames Edited Chat Instead of Creating a
New One #10373
change:
reset chat state when creating new dialog

### Type of change

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

web/src/pages/next-chats/hooks/use-rename-chat.ts

@@ -68,6 +68,8 @@ export const useRenameChat = () => {
     (record?: IDialog) => {
       if (record) {
         setChat(record);
+      } else {
+        setChat({} as IDialog);
       }
       showChatRenameModal();
     },