Update `RecordCache` query responses for possibility of top-level tx id with `nonce !=0`

System admin dispatches (e.g., HIP-1064 node rewards payments) are top-level transactions with non-zero `TransactionID#nonce`.

HIP-1215, "Generalized scheduled contract calls", will also introduce the possibility of top-level user txs (i.e., self-scheduling contract calls) having non-zero nonce.

We need to update the `RecordCache` query response to handle this possibility gracefully.