Description of the new feature/enhancement

There is an issue with zsh and powerlevel10k with some configuration. When you use ruler or/and right segment in powerlevel10k and you resize the window, the content is reflowed and a mess happen in the terminal as described in the powerlevel10k README.

Proposed technical implementation details (optional)

An option that allow the user to choose between reflowing or truncating (the buffer or on display) the terminal content will solve this problem.