Fix lost form submissions on archives, the unlocked update finish and six more

Update Symfony to 7.4.23 (12 advisories in 8 packages).

- A form can be sent from /beitraege, /kategorie/... and /schlagwort/...;
  it answered 404 before anything was stored or mailed.
- Booleans reach the database as integers, so MySQL in strict mode
  accepts form submissions, task switches and plugin states.
- A stepped form with a required multiple choice shows its message
  instead of stopping on a TypeError.
- The second update step runs under the update lock; a concurrent
  finish no longer rolls a successful update back.
- Accordion entries and gallery images can be selected from the
  editor panel again.
- Category and tag names are escaped in the archive heading.
- Restoring a published page from the bin needs the publisher role.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

src/Content/PageRepository.php

@@ -190,6 +190,12 @@ final class PageRepository
         );
     }
 
+    /** Ob eine Seite eine veröffentlichte Fassung trägt - auch wenn sie im Papierkorb liegt. */
+    public function hasPublication(string $pageId): bool
+    {
+        return false !== $this->db->fetchOne('SELECT id FROM page WHERE id = ? AND website_id = ? AND published_revision_id IS NOT NULL', [$pageId, 'default']);
+    }
+
     public function trashPage(string $pageId, int $expectedVersion): int
     {
         return $this->db->transactional(function () use ($pageId, $expectedVersion): int {