Streaming indicator not functioning with powerlevel10k theme.

We prefix the shell prompt with a streaming indicator (prefixed emoji to shell prompt, so that user doesn't forget their shell is being shared).

Relevant file:

https://github.com/akshaykmr/teletype/blob/master/src/lib/teletype/index.ts#L81..L84

I've tried `precmd_functions` approach, it only works for the first prompt (resets on its own).