feat(chat): add `chat` and `additional` FSM's as exception for pushing to `FSMStack`
feat(chat): add `chat` and `additional` FSM's as exception for pushing to `FSMStack`

cjlee112/socraticqs2,raccoongang/socraticqs2,raccoongang/socraticqs2,cjlee112/socraticqs2,raccoongang/socraticqs2,raccoongang/socraticqs2,cjlee112/socraticqs2,cjlee112/socraticqs2