fix(Store Validator / GC): State Headers and Parts upd (#2954)

Fixing `state_header_block_exists` and saving State Header each time after State Part is calculated.

chain/chain/src/chain.rs

@@ -1524,6 +1524,9 @@ impl Chain {
         let state_part =
             self.runtime_adapter.obtain_state_part(shard_id, &state_root, part_id, num_parts);
 
+        // Before saving State Part data, we need to make sure we can calculate and save State Header
+        self.get_state_response_header(shard_id, sync_hash)?;
+
         // Saving the part data
         let mut store_update = self.store.owned_store().store_update();
         store_update.set_ser(ColStateParts, &key, &state_part)?;

chain/chain/src/store_validator/validate.rs

@@ -742,7 +742,7 @@ pub(crate) fn state_header_block_exists(
     _header: &ShardStateSyncResponseHeader,
 ) -> Result<(), StoreValidatorError> {
     unwrap_or_err_db!(
-        sv.store.get_ser::<ShardStateSyncResponseHeader>(ColBlock, key.1.as_ref()),
+        sv.store.get_ser::<Block>(ColBlock, key.1.as_ref()),
         "Can't get Block from DB"
     );
     Ok(())