fix: Message.pin and Message.unpin for WWeb version >2.3000.0

[alechkos]

PR Details

Fix for the Message.pin and Message.unpin functions in WWeb version >2.3000.0.

Description

After the WWeb was updated to >2.3000.0, Message.pin and Message.unpin functions became non-working.
The PR fixes these functions.

How Has This Been Tested

// client initialization...
client.on('message', async (msg) => {
    const sender = '[email protected]';
    if (message?.author === sender || message?.from === sender) {
        // pin message for 4 seconds (you can provide your own value)
        await message.pin(4);
        // unpin message
        await message.unpin();
    }
});

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)