fix: TERM variable glitching out Tmux

Could be related to this issue: tmux-plugins/tmux-sensible#50

Also relevant: https://stackoverflow.com/questions/45931164/duplicated-characters-and-non-updating-input-using-tmux-in-zsh

tmux/.tmux.conf

@@ -29,8 +29,8 @@ bind h split-window -v -c "#{pane_current_path}"
 set -g base-index 1
 setw -g pane-base-index 1
 
-# Colour scheme enabled in "tmux-sensible" plugin
-#set -g default-terminal "screen-256color"
+# Set to "tmux-256color" by tmux-sensible, but that seems to glitch it out
+set -g default-terminal "xterm-256color"
 
 # Load plugins
 set -g @plugin 'tmux-plugins/tpm'