Refactor ticket validity handling and improve tests

- Updated tests for Accommodation, Entry, Food, Merchandise, and Sale controllers to use soft deletes for variants and ensure proper inventory counts.
- Enhanced ticket generation logic to resolve validity from soft-deleted catalog sources.
- Introduced a new TicketValidityResolver service to manage ticket validity based on event dates and variant definitions.
- Removed unnecessary database assertions and improved the clarity of validity checks in tests.
- Added comprehensive tests for the new TicketValidityResolver service, ensuring correct handling of event dates and multi-select options.
- Cleaned up unused code and assertions in existing tests for better maintainability.

app/Domains/Ticket/Enums/TicketGenerationPolicy.php

@@ -1,15 +0,0 @@
-<?php
-
-namespace App\Domains\Ticket\Enums;
-
-enum TicketGenerationPolicy: string
-{
-    case PerEventDate = 'per_event_date';
-    case OnePerUnit = 'one_per_unit';
-
-    /** @return list<string> */
-    public static function values(): array
-    {
-        return array_column(self::cases(), 'value');
-    }
-}