Bridge packed event collection through save import

crates/rrt-fixtures/src/load.rs

@@ -117,6 +117,7 @@ mod tests {
                 world_restore: RuntimeWorldRestoreState::default(),
                 metadata: BTreeMap::new(),
                 companies: Vec::new(),
+                packed_event_collection: None,
                 event_runtime_records: Vec::new(),
                 candidate_availability: BTreeMap::new(),
                 special_conditions: BTreeMap::new(),