Merged PR 51965: Allow Chat data object to be used as a view Model

## What's being changed

Allow Chat data object to be used as a viewModel

## Why it's being changed

We added the interface to allow this class to be used within the Hyva Themes chat fallback module.

## How to review / test this change

- Ensure Chat behaves as expected as of the most recent release on the Luma Magento theme.

Related work items: #242863

CustomerData/Chat.php

@@ -7,12 +7,13 @@
 use Magento\Customer\CustomerData\SectionSourceInterface;
 use Magento\Framework\Exception\LocalizedException;
 use Magento\Framework\Exception\NoSuchEntityException;
+use Magento\Framework\View\Element\Block\ArgumentInterface;
 use Magento\Store\Model\StoreManagerInterface;
 use Magento\Framework\UrlInterface;
 use Dotdigitalgroup\Email\Helper\Data;
 use Magento\TestFramework\Event\Magento;
 
-class Chat implements SectionSourceInterface
+class Chat implements SectionSourceInterface, ArgumentInterface
 {
  /**
  * @var Config