fix(gnu-utils): reset ls alias to use GNU-based --color argument (#11527)

plugins/gnu-utils/gnu-utils.plugin.zsh

@@ -61,3 +61,14 @@ __gnu_utils_preexec() {
 
 autoload -Uz add-zsh-hook
 add-zsh-hook preexec __gnu_utils_preexec
+
+# lib/theme-and-appearance.zsh sets the alias for ls not knowing that
+# we'll be using GNU ls. We'll reset this to use GNU ls --color.
+# See https://github.com/ohmyzsh/ohmyzsh/issues/11503
+#
+# The ls alias might look like:
+# - ls='ls -G'
+# - ls='gls --color=tty'
+if [[ -x "${commands[gls]}" && "${aliases[ls]}" = (*-G*|gls*) ]]; then
+  alias ls='ls --color=tty'
+fi