fix #K3357 - curses menu disappears

This fixes the disappearing menu, but not curses menu count entry
failing to honor backspace/delete.  Entering two or more digits
to get a "Count:12" message, followed by non-digit which removes
that, resulted in the menu for apply/loot in-out container operation
vanishing while it was still waiting for a choice.  (Typing a choice
blindly did work.)

The code intended to handle this.  I don't understand why refresh()
wasn't working.  Reordering stuff didn't help until I changed that
from refresh() to wrefresh(win).

The original Count:123 display was limited to 25 characters and
menus to half the main window, so they didn't overlap.  I made the
count display wider--because it is now also used for 'autodescribe'
feedback when moving the cursor around the map--so made something
that originally was impossible become possible.  One line of the
menu does get erased while "Count:" is displayed, but then gets put
back by the wrefresh().

win/curses/cursmisc.c

@@ -65,7 +65,7 @@ curses_read_char(void)
     }
 #endif
 
-    if (counting && !isdigit(ch)) { /* Dismiss count window if necissary */
+    if (counting && !isdigit(ch)) { /* dismiss count window if necessary */
         curses_count_window(NULL);
         curses_refresh_nethack_windows();
     }