fix(events): Correct data fetching for session child objects

This commit fixes a bug where presentations, presenters, and files related to a session were not being displayed. The issues were caused by incorrect property names ( suffix) and improper use of Svelte 5 features after a recent refactoring.

src/lib/elements/element_manage_event_file_li_direct.svelte

@@ -52,7 +52,7 @@ let lq__event_file_obj_li = $derived(liveQuery(async () => {
     let results = await db_events.file
         .where(dq__where_val)
         .equals(dq__where_eq_val)
-        .and(file => file.for_id_random == dq__where_for_id_eq_val)
+        .and(file => file.for_id == dq__where_for_id_eq_val)
         .reverse()
         .sortBy('created_on')
         // .toArray()