Show "You cannot apply that rune" when a rune is refused

applyRune returns false on every failed requirement without telling the
player, so using a rune the character doesn't qualify for did nothing. The
caller now sends popup 161 on refusal, matching popup 160 on success. The id
comes from the server's ErrorPopupMsg list; the popup strings aren't in the
client exe, so it isn't confirmed in IDA.

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

src/engine/net/client/handlers/ObjectActionMsgHandler.java

@@ -266,7 +266,8 @@ public class ObjectActionMsgHandler extends AbstractClientMsgHandler {
                     case RUNE:
                         if(ApplyRuneMsg.applyRune(uuid, origin, player)) {
                             itemMan.consume(item);
-                        }
+                        } else
+                            ErrorPopupMsg.sendErrorPopup(player, 161);
                         break;
                     default: //shouldn't be here, consume item
                         dispatch = Dispatch.borrow(player, msg);