Can't pass timestamp to givenEvents events

[krutilin]

Describe the bug
Can't pass timestamp to givenEvents events in tests. The timestamp value is always modified under the hood.

To Reproduce
Steps to reproduce the behavior:

1. npx create-resolve-app resolve-shopping-list -e shopping-list
2. aggregates.test.js

import {
  SHOPPING_LIST_CREATED,
} from '../../common/event_types'

import givenEvents from '@resolve-js/testing-tools'
import projection from '../../common/aggregates/shopping_list.projection'
import commands from '../../common/aggregates/shopping_list.commands'

const shoppingListAggregate = {
  name: 'ShoppingList',
  projection,
  commands: commands
}

describe('aggregates', () => {
  test.only('ShoppingList Create', async () => {
    const event = await givenEvents([{
      type: SHOPPING_LIST_CREATED,
      payload: { name: 'TESTS' },
      timestamp: 1
    }])
      .aggregate(shoppingListAggregate)
      .command('createShoppingList', {
        name: 'Lager',
      })

    console.log(event)
  })
})

3. shopping_list.projection.js

import { SHOPPING_LIST_CREATED, SHOPPING_LIST_REMOVED } from '../event_types'

export default {
  Init: () => ({}),
  [SHOPPING_LIST_CREATED]: (state, payload) => {
    const { timestamp } = payload
    console.log('state', state)
    console.log('payload', payload)
    return {
      ...state,
      createdAt: timestamp,
    }
  },
  [SHOPPING_LIST_REMOVED]: () => ({}),
}

4. yarn test
5. see the console log with timestamp different from passed to the givenEvents events.

console.log
    payload {
      threadCounter: 0,
      threadId: 169,
      type: 'SHOPPING_LIST_CREATED',
      timestamp: 1620836182180,
      aggregateId: 'test-aggregate-id',
      aggregateVersion: 1,
      payload: { name: 'TESTS' }
    }

Expected behavior
Do not modify timestamp if it is set in events.

Desktop (please complete the following information):

• ReSolve Version 0.30.2