Fix object-form breaking on repeat pjax visits, and stray autofill in game rename field

object_form.js declared top-level const bindings, which pjax replays verbatim on every visit — the second visit threw "already declared" and silently broke "Ajouter un champ"/"Créer l'objet". Wrapped it in an IIFE. Also renamed the generic name="name" rename-game field to name="game_name" with autocomplete off, since browsers were autofilling it with unrelated previously-typed values.

templates/game_dashboard.html

@@ -49,7 +49,7 @@
   <form method="post" action="{{ url_for('game_rename', slug=game.slug) }}" class="fieldRow" style="align-items:flex-end;">
     <div>
       <label for="rename">Renommer le jeu</label>
-      <input type="text" id="rename" name="name" value="{{ game.name }}" required>
+      <input type="text" id="rename" name="game_name" value="{{ game.name }}" required autocomplete="off">
     </div>
     <button type="submit">Renommer</button>
   </form>