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<!-- Describe the issue -->

**Expected behavior**

When I make a json-rpc call to `getblock` with:

```json
{
    "jsonrpc": "1.0",
    "id": "curltest",
    "method": "getblock",
    "params": ["37351c7060ec3a149af1bbc9ebcc436c0ee652f96559ef1fe9bc45d11000f061", "2"]
}
```
An error should be returned with the [expected data type](https://developer.bitcoin.org/reference/rpc/getblock.html#argument-2-verbosity)(number) for `verbosity`.
<!--- What behavior did you expect? -->

**Actual behavior**

<!--- What was the actual behavior (provide screenshots if the issue is GUI-related)? -->

Received `"message": "JSON value is not a boolean as expected"` as an error message which is not the [expected data type](number) (https://developer.bitcoin.org/reference/rpc/getblock.html#argument-2-verbosity) for `verbosity`

**To reproduce**

Use this curl on a node

```
curl --location --request POST "127.0.0.1:8332" \
--header "Content-Type: application/json" \
--header "Authorization: Basic YOUR_AUTH" \
--data "{
    \"jsonrpc\": \"1.0\",
    \"id\": \"curltest\",
    \"method\": \"getblock\",
    \"params\": [\"37351c7060ec3a149af1bbc9ebcc436c0ee652f96559ef1fe9bc45d11000f061\", \"2\"]
}"
```

**System information**
* self-compiled

<!-- What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? -->

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<!-- GUI-related issue? What is your operating system and its version? If Linux, what is your desktop environment and graphical shell? -->

<!-- Any extra information that might be useful in the debugging process. -->
<!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->

"\"start\" for starting a scan\n"
                "\"abort\" for aborting the current scan (returns true when abort was successful)\n"
                "\"status\" for progress report (in %) of the current scan"},
            {"scanobjects", RPCArg::Type::ARR, RPCArg::Optional::OMITTED, "Array of scan objects. Required for \"start\" action\n"
                "Every scan object is either a string descriptor or an object:",
            {
                {"descriptor", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "An output descriptor"},
                {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "An object with output descriptor and metadata",
                {
                    {"desc", RPCArg::Type::STR, RPCArg::Optional::NO, "An output descriptor"},
                    {"range", RPCArg::Type::RANGE,  "1000", "The range of HD chain indexes to explore (either end or [begin,end])"},
                }},
            },
                        "[scanobjects,...]"},
        },
        {
            RPCResult{"When action=='abort'", RPCResult::Type::BOOL, "", ""},
            RPCResult{"When action=='status' and no scan is in progress", RPCResult::Type::NONE, "", ""},
            RPCResult{"When action=='status' and scan is in progress", RPCResult::Type::OBJ, "", "",
            {
                {RPCResult::Type::NUM, "progress", "The scan progress"},
            }},
            RPCResult{"When action=='start'", RPCResult::Type::OBJ, "", "", {
                {RPCResult::Type::BOOL, "success", "Whether the scan was completed"},
                {RPCResult::Type::NUM, "txouts", "The number of unspent transaction outputs scanned"},
                {RPCResult::Type::NUM, "height", "The current block height (index)"},
                {RPCResult::Type::STR_HEX, "bestblock", "The hash of the block at the tip of the chain"},
                {RPCResult::Type::ARR, "unspents", "",
                {
                    {RPCResult::Type::OBJ, "", "",