fix(lib): set equivalent LS_COLORS and LSCOLORS variables

As reported by https://geoff.greer.fm/lscolors

Fixes #11554

lib/theme-and-appearance.zsh

@@ -78,6 +78,6 @@ if [[ -z "$LS_COLORS" ]]; then
       && source <(dircolors -b "$HOME/.dircolors") \
       || source <(dircolors -b)
   else
-    export LS_COLORS="di=34:ln=35:so=32:pi=33:ex=31:bd=34;46:cd=34;43:su=37;41:sg=30;43:tw=30;42:ow=34;42:"
+    export LS_COLORS="di=1;36:ln=35:so=32:pi=33:ex=31:bd=34;46:cd=34;43:su=30;41:sg=30;46:tw=30;42:ow=30;43"
   fi
 fi