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/Service/User/UserProfileViewService.php

@@ -50,7 +50,7 @@ class UserProfileViewService
             return ['status' => 'forbidden'];
         }
 
-        $viewerTenantIds = $this->normalizeIds($this->scopeGateway->getUserTenantIds($currentUserId));
+        $viewerTenantIds = toIntIds($this->scopeGateway->getUserTenantIds($currentUserId));
         $assignments = $this->userAssignmentService->buildAssignmentsForUser($targetUserId);
 
         $departmentMap = [];
@@ -154,14 +154,4 @@ class UserProfileViewService
 
         return $profile;
     }
-
-    /**
-     * @param array<int, int|string> $values
-     * @return list<int>
-     */
-    private function normalizeIds(array $values): array
-    {
-        $ids = array_values(array_unique(array_map('intval', $values)));
-        return array_values(array_filter($ids, static fn (int $id): bool => $id > 0));
-    }
 }