chore(tmux): remove default shell and allow passthrough

.config/tmux/tmux_general.conf

@@ -1,6 +1,8 @@
 # tmux_general.conf
 
 set -g default-terminal "tmux-256color"
+set -gq allow-passthrough on
+set -g visual-activity off
 set -sa terminal-features ",*:RGB"
 set -sg escape-time 0
 set -g mouse on
@@ -15,5 +17,3 @@ setw -g mode-keys vi
 set -g status-style 'bg=#181926 fg=#cad3f5'
 set -g status-right ""
 set -g status-left-length 20
-set-option -g default-command /bin/zsh
-set-option -g default-shell /bin/zsh