fix: Use correctly optional chaining to get me

me[0] should exist here because every one has me. But after we should use it until the end.

libs/cozy/sync.ts

@@ -25,7 +25,7 @@ export const shouldDisplayContact = async (client: CozyClient, contact: IOCozyCo
   const me = await fetchMyself(client);
 
   const contactRelatedToMe = // @ts-expect-error related added manually with an hydration
-    me?.[0]?.relationships?.related?.data.find(
+    me[0].relationships?.related?.data?.find(
       // @ts-expect-error related added manually with an hydration
       (relatedContact) => relatedContact._id === contact._id,
     );