bug: TUI - can't tell what I've typed vs agent in scrollback

[throwaway8787]

Checks

• I have searched github.com/aws/amazon-q-developer-cli/issues and there are no duplicates of my issue
• I have run q doctor in the affected terminal session
• I have run q restart and replicated the issue again

Operating system

linux

Expected behaviour

Scroll back, easily find what I've typed vs agent

Actual behaviour

There is no leading character in scrollback to help me find what I typed vs the agent responded with like the non tui cli

Steps to reproduce

No response

Environment