Current behavior:

```
src/bitcoin-cli -signet decodescript 2103d3b9c8cc852f3b4a06bad1711fd1a1761a592bf1475edc0a5f97b31759eba330ac736476a914b6e87320e876a740fc1365aeb1f4b6ab2fe4210b88ad53b268
```
```json
{
  "asm": "03d3b9c8cc852f3b4a06bad1711fd1a1761a592bf1475edc0a5f97b31759eba330 OP_CHECKSIG OP_IFDUP OP_NOTIF OP_DUP OP_HASH160 b6e87320e876a740fc1365aeb1f4b6ab2fe4210b OP_EQUALVERIFY OP_CHECKSIGVERIFY 3 OP_CHECKSEQUENCEVERIFY OP_ENDIF",
  "desc": "raw(2103d3b9c8cc852f3b4a06bad1711fd1a1761a592bf1475edc0a5f97b31759eba330ac736476a914b6e87320e876a740fc1365aeb1f4b6ab2fe4210b88ad53b268)#uul8nd2t",
  "type": "nonstandard",
  "p2sh": "2N62ryy2gBC2QBSdsm832Tv6qCW5py53wJn",
  "segwit": {
    "asm": "0 43c1d0387e91045591f19ff6d60af2bc0d91473b79dc3238aa9d0430f89741bc",
    "desc": "addr(tb1qg0qaqwr7jyz9ty03nlmdvzhjhsxez3em08wryw92n5zrp7yhgx7qj56vra)#ugngfnm5",
    "hex": "002043c1d0387e91045591f19ff6d60af2bc0d91473b79dc3238aa9d0430f89741bc",
    "address": "tb1qg0qaqwr7jyz9ty03nlmdvzhjhsxez3em08wryw92n5zrp7yhgx7qj56vra",
    "type": "witness_v0_scripthash",
    "p2sh-segwit": "2N9diLEHbASsz1oAeDQJPg5mb4LaAju9175"
  }
}
```

It would be nice if this (also) returned miniscript.

Perhaps `getaddressinfo` could do this as well (after #24148).

cc @sipa, @darosior 
{
    return RPCHelpMan{"createpsbt",
                "\nCreates a transaction in the Partially Signed Transaction format.\n"
                "Implements the Creator role.\n",
                CreateTxDoc(),
                RPCResult{
                    RPCResult::Type::STR, "", "The resulting raw transaction (base64-encoded string)"
                },
                RPCExamples{
                    HelpExampleCli("createpsbt", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    std::optional<bool> rbf;
    if (!request.params[3].isNull()) {
        rbf = request.params[3].get_bool();
    }
    CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], rbf);
    
    PartiallySignedTransaction psbtx;
    psbtx.tx = rawTx;
    for (unsigned int i = 0; i < rawTx.vin.size(); ++i) {
        psbtx.inputs.push_back(PSBTInput());
    }
    for (unsigned int i = 0; i < rawTx.vout.size(); ++i) {
        psbtx.outputs.push_back(PSBTOutput());
    }