Fix fatal duplicate symbols from church→shop/menu rename.

The customize script's blind TYPE_CHURCH→TYPE_SHOP and churchLogo→menuLogo
replacements created a duplicate QrCode::TYPE_SHOP constant and duplicate
QrScanController::menuLogo()/menuCover() methods — fatal at request time
(crashed /dashboard with 500). The menu* methods already cover TYPE_SHOP,
so drop the redundant church-origin copies.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Models/QrCode.php

@@ -19,7 +19,6 @@ class QrCode extends Model
     public const TYPE_IMAGE = 'image';
     public const TYPE_SHOP = 'shop';
     public const TYPE_MENU = 'menu';
-    public const TYPE_SHOP = 'shop';
     public const TYPE_APP = 'app';
     public const TYPE_BOOKING = 'booking';
     /** @deprecated Legacy ebook type — migrated to {@see TYPE_BOOKING} */