Wrap fallible draw operations in closures so that ESC[?2026l is always
sent regardless of whether an intermediate step (write_all, flush,
clear, draw) returns an error. Without this, a failing ? would return
early and leave the terminal stuck in synchronized-update mode with a
frozen screen.
Review feedback from gemini-code-assist[bot] on #1361.
xuezhaoyu
beb4120adc