Mark Blocks as API

[sivaschenko]

The following blocks should be marked as API for 2.5 release line

1. Magento\PageBuilder\Block\WidgetInitializer
2. Magento\PageBuilder\Block\WysiwygSetup
3. Magento\PageBuilder\Block\GoogleMapsApi
4. Magento\PageBuilder\Block\Adminhtml\Html\Head\BabelPolyfill
5. Magento\PageBuilder\Block\Adminhtml\Stage\Render
6. Magento\PageBuilder\Block\Adminhtml\System\Config\SwitchAttributeType

[m2-assistant]

Hi @sivaschenko. Thank you for your report.
To help us process this issue please make sure that you provided sufficient information.

Please, add a comment to assign the issue: @magento I am working on this

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[Usik2203]

@magento I am working on this

[gabrieldagama]

These blocks should be marked as API on 2.4-develop