cardano-rpc: Fix TxOutput.address and Datum.hash wire encoding

[carbolymer]

Context

An audit of the proto bytes fields populated by the UTxO RPC server found two fields carrying the wrong encoding.
TxOutput.address was populated with human-readable address text (bech32 for Shelley, base58 for Byron) instead of raw ledger address bytes.
Datum.hash was populated with the datum's CBOR instead of its blake2b-256 hash when the datum was inline.
Both diverged from the other UTxO RPC implementations (Dolos via pallas-utxorpc, Blink Labs cardano-node-api) and, for the address, from our own predicate and reward-account encoding.
The server is unreleased, so the wire format can still change without breaking clients.

Fixes #1246

Stacked on #1222 - only the last two commits belong to this PR.

How to trust this PR

txOutToUtxoRpcTxOutput now uses serialiseToRawBytes for the address (raw header plus payload bytes, Byron included) and hashScriptDataBytes for the inline datum hash, and utxoRpcTxOutputToTxOut decodes the address with deserialiseFromRawBytes in lockstep.
Address serialisation is now uniform across cardano-rpc: transaction outputs, exact_address predicates and reward accounts all use raw on-chain bytes in both directions, so a client can echo TxOutput.address into a SearchUtxos predicate and get matches.
The new hprop_tx_output_wire_format property pins the wire format directly; the existing round-trip property cannot catch the inline datum bug because decoding never reads Datum.hash when original_cbor is present.
Run cabal test cardano-rpc:cardano-rpc-test to verify; all 78 tests pass.
The cardano-node E2E test Cardano.Testnet.Test.Rpc.FetchBlock asserts the same encoding and changes in lockstep (branch mgalazyn/fix-grpc-bytes-fields in cardano-node).

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated. See Running tests for more details
• Self-reviewed the diff
• Changelog fragment added in .changes/

[Jimbo4350]

LGTM