refactor(support): centralize ID-array normalization in toIntIds()

Consolidates the scattered `array_values(array_unique(array_map('intval',
$x)))` + manual positive-filter pattern behind a single lenient helper
`toIntIds(mixed $value): array` in core/Support/helpers/array.php.

- `RepositoryArrayHelper::sanitizePositiveIds()` now delegates (keeps
  strict array-input contract + existing tests intact).
- Drops two private duplicates: `UserProfileViewService::normalizeIds()`
  and `AddressBookService::normalizeIds()`.
- Replaces 12 inline occurrences across admin action pages with the
  helper, cutting boilerplate by 3-5 lines per site.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core/Repository/Support/RepositoryArrayHelper.php

@@ -63,12 +63,13 @@ final class RepositoryArrayHelper
 
     /**
      * Sanitize an array of IDs to unique positive integers.
+     *
+     * Thin repository-layer adapter over the global `toIntIds()` helper,
+     * kept for the stricter `array` input contract expected by repositories.
      */
     public static function sanitizePositiveIds(array $ids): array
     {
-        $ids = array_values(array_unique(array_map('intval', $ids)));
-
-        return array_values(array_filter($ids, static fn (int $id): bool => $id > 0));
+        return toIntIds($ids);
     }
 
     /**