fix(alacritty): add TERM = "xterm-256color"

modules/home/alacritty.nix

···
 { wrappers, ... }: {
   config.home.packages = [(wrappers.alacritty {
     settings = {
+      env.TERM = "xterm-256color";
+
       colors.primary = {
         background = "#1e1e2e";
         foreground = "#cdd6f4";