fix: chat instance retrieving in syncHistory

[alechkos]

PR Details

The PR fixes the invalid logic of chat instance retrieving in Client.syncHistory:

const chat = await window.WWebJS.getChat(chatId);

We don't want to get a serialized chat model.

How Has This Been Tested

// client initialization...

client.on('ready', async () => {
    const chatId = 'YOUR_CHAT_ID_HERE';
    console.log(await client.syncHistory(chatId));
}

You can try the fix by running one of the following commands:

• NPM

npm install github:alechkos/whatsapp-web.js#fix-sync-history

• YARN

yarn add github:alechkos/whatsapp-web.js#fix-sync-history

Types of changes

• Dependency change
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• I have updated the documentation accordingly (index.d.ts).
• I have updated the usage example accordingly (example.js)