Update code that we're going to delete in the next PR anyway

Author: teor2345

zebrad/tests/common/get_block_template_rpcs/get_block_template.rs

@@ -222,10 +222,10 @@ fn proposal_block_from_template(
             version,
             previous_block_hash,
             merkle_root,
-            commitment_bytes: block_commitments_hash.into(),
+            commitment_bytes: block_commitments_hash.bytes_in_serialized_order().into(),
             time: time.into(),
             difficulty_threshold,
-            nonce: [0; 32],
+            nonce: [0; 32].into(),
             solution: Solution::for_proposal(),
         }),
         transactions: transactions.clone(),