shell: Fix tmux color sequence on starting new session

tmux-plugins/tmux-sensible#61
tmux-plugins/tmux-sensible#60

Author: decart

zsh/.tmux.conf

@@ -2,7 +2,7 @@ set -g default-terminal "tmux-256color"
 set -ag terminal-overrides ",xterm-256color:RGB"
 set -g focus-events on
 set -g mode-keys vi
-set -s escape-time 0
+set -s escape-time 1
 set -g status-interval 0
 
 # Config prefix