don't highlight a stats bar after a loss

Since progress is saved before the final reveal, save_result runs with
ROW still on the last row, so losing on the sixth guess highlighted the
"6" bar as if the game had been won. Only highlight after a win.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

wordle

@@ -559,7 +559,8 @@ function render_stats() {
 
     axis=$(( i+1 ))
 
-    if [[ "${ROW}" == "${i}" ]]; then 
+    # Highlight the bar for this game's guess count, only if it was won
+    if [[ $WIN == 5 && "${ROW}" == "${i}" ]]; then
       echo "$axis│${LETTER_GR}$bar${RESET} $value"
     else
       echo "$axis│$bar $value"