fix(history): fix logic error in prompt for `history -c` (#12500)

Logic error in `history -c` when prompting for confirmation caused history
to be deleted when typing anything but explicitly `n`, `N`, or sending `\n`.
New logic prevents deletion by pressing wrong key and only deletes
history when sending `y` or `Y`.

Co-authored-by: Sargates <nicholas.g.glenn@gmail.com>

lib/history.zsh

@@ -11,7 +11,7 @@ function omz_history {
     print -nu2 "This action will irreversibly delete your command history. Are you sure? [y/N] "
     builtin read -k1
     [[ "$REPLY" = $'\n' ]] || print -u2
-    [[ "$REPLY" != ([nN]|$'\n') ]] || return 0
+    [[ "$REPLY" != ([yY]) ]] && return 0
 
     print -nu2 >| "$HISTFILE"
     fc -p "$HISTFILE"