Fix LedgerResponseExpanded type for ledger RPC in APIv2

[pdp2121]

Context

ledger RPC responses with transactions and expand options enabled are structurally different between APIv1 and APIv2 in the transactions array:

For example:
v1:

"transactions": [
        {
          "validated": true,
          "ledger_index": 93637993,
          "close_time_iso": "2025-01-22T21:13:50Z",
          "ledger_hash": "058FDA696458896EC515AC19C3EDC8CD0E163A3620CA6B314165E5BAED70846A",
          "hash": "0346AECFA86DDF2ADE0C87AADD64D8B875980B7AC970B0CB9F0587E021B06AF5",
          "tx_json": {
            "Account": "rPrioTXJgZJF8bpdXq2X73PcVPfvYqjVKd",
            "DeliverMax": "1",
            "Destination": "rsRy14FvipgqudiGmptJBhr1RtpsgfzKMM",
            "DestinationTag": 321321,
            "Fee": "11",
            "Flags": 0,
            "LastLedgerSequence": 93638091,
            "Sequence": 93047513,
            "SigningPubKey": "EDE29EFE62F440CDDD6E537CE1C50C2711BFD8AC1CAE2CE20EAE77FB187F9ECBB8",
            "TransactionType": "Payment",
            "TxnSignature": "8FCBB4E86791B6B627739ED30BC2B8EFF44C56D82920D1F58DB0E465F3AA51195464EE92967CD01FEEA0FF4BFB81D585E6AC89569B0BA913E2CB66966251720F"
          },
          "meta": {
            ... meta data here
          }
        }
... other tx

v2:

"transactions": [
        {
          "Account": "rnD3H5GTySEt9DUjUeXLKP9hQ7beMzHxd9",
          "Amount": "10000000",
          "Destination": "rNxp4h8apvRis6mJf9Sh8C6iRxfrDWN7AV",
          "Fee": "10",
          "Flags": 2147483648,
          "LastLedgerSequence": 93638165,
          "Sequence": 70086956,
          "SigningPubKey": "03F9E4772BBFFE7E2E11B7F7564FB3DB252F7DE5BF7F0D215EC84AD5C63DD9AB77",
          "TransactionType": "Payment",
          "TxnSignature": "304402206F51A34077144F6B562A2EAC2CED227A6FFE31DBB5D8407358813E7B30B5639E02205EE3B2E0CCDF99E9844F40C4B033027EF117BB199A69DE8B75A1B7C14895F4B4",
          "hash": "044314FE34236A262DA692789CE5B48CA1A3CEC078B1A4ECCD65F4B61A9EB0A7",
          "DeliverMax": "10000000",
          "metaData": {... meta...}

To Do

The LedgerResponseExpanded defined here:
https://github.com/XRPLF/xrpl.js/blob/main/packages/xrpl/src/models/methods/ledger.ts#L291-L295
should be updated to reflect the changes in v2 (such as the new field tx_json, renaming of metaData to meta, etc.