fix: keep only the roll-die shortcut active in the lobby (#6754)

Player menu shortcuts were bound as soon as a local player was added in the deck-selection lobby. Defer full activation until GameMetaInfo reports the game has started, and bind only Player/aRollDie while in the lobby. Counters follow the deactivation signal, so they cannot re-enable shortcuts before the game starts.

cockatrice/src/game_graphics/player/menu/utility_menu.cpp

@@ -150,4 +150,13 @@ void UtilityMenu::setShortcutsInactive()
         aCreateAnotherToken->setShortcut(QKeySequence());
         aIncrementAllCardCounters->setShortcut(QKeySequence());
     }
+}
+
+void UtilityMenu::setLobbyShortcutsActive()
+{
+    if (!player->getLogic()->getPlayerInfo()->getLocalOrJudge()) {
+        return;
+    }
+
+    aRollDie->setShortcuts(SettingsCache::instance().shortcuts().getShortcut("Player/aRollDie"));
 }