decodeLogs not work for event logs with struct parameter

decodeLogs can not decode events with struct tuple logs, it show empty value.

### Environment

$ truffle version
Truffle v5.1.37 (core: 5.1.37)
Solidity - 0.7.1 (solc-js)
Node v10.20.0
Web3.js v1.2.1

### Steps to reproduce
1. get test contract
```
pragma solidity ^0.7.1;
pragma experimental ABIEncoderV2;
// SPDX-License-Identifier: MIT

contract SimpleStructStorage {
struct Data {
uint a;
string b;
}

Data storedData;

event SET(Data d);
function set(Data memory x) public {
storedData = x;
emit SET(x);
}

function get() public view returns (Data memory x) {
return storedData;
}
}

```
2. compile with truffle and run test
```
const SimpleStructStorage = artifacts.require('SimpleStructStorage')
const Web3 = require('web3');


contract('SimpleStructStorage', (accounts) => {
let instance
const web3 = new Web3('http://localhost:8545');

before('setup', async () => {
instance = await SimpleStructStorage.new()
console.log("instance", instance.address);

})

describe('test struct input parameter', () => {
it('should set struct data', async () => {
const data = {a: 100, b: "test"}
const {receipt: {transactionHash}} = await instance.set(data)
console.log(transactionHash)
const {a, b} = await instance.get()
assert.equal(a, 100)
assert.equal(b, 'test')

web3.eth.getTransactionReceipt(transactionHash, function(e, receipt) {
const decodedLogs = abiDecoder.decodeLogs(receipt.logs);
console.log(decodeLogs)
});
})
})
})

```
3. run decodeLogs test script
node test_abi_decoder.js 0xxxx
```
//test_abi_decoder.js
const Web3 = require('web3');
const web3 = new Web3('http://localhost:8545');
const {addABI, decodeMethod, decodeLogs}= require('abi-decoder');

const abiJson = require('./build/contracts/SimpleStructStorage.json')
const ABI = abiJson.abi
addABI(ABI);

const transactionHash=process.argv[2] //you set tx hash

//Input Data
web3.eth.getTransaction(transactionHash, function(e, data) {
const inputData = data.input;
const decodedData = decodeMethod(inputData);
console.log(decodedData.params[0].value);
});


//Event Logs
web3.eth.getTransactionReceipt(transactionHash, function(e, receipt) {
const decodedLogs = decodeLogs(receipt.logs);
console.log(decodedLogs[0].events)
});

```
### Expected behaviour
decodeLogs Should show below output
[ { name: 'd', type: 'tuple', value: [ '100', 'test' ] } ]

### Actual behaviour
decodeLogs show empty value
[ { name: 'd', type: 'tuple', value: [] } ]

Start at the decodeLogs entry point and reproduce the issue with test_abi_decoder.js using the provided SimpleStructStorage ABI and transaction receipt. Trace tuple event decoding for the struct parameter and verify that the result changes from an empty value to ["100", "test"] as expected.

Written by the indexing model from the issue text.