Update TinyMCE config to match Magento_CMS config

[rhoerr]

Description (*)

This updates the PageBuilder TinyMCE config to match what we have set for upstream in Magento_CMS.

The new settings are added with array_replace_recursive, meaning any existing additionalSettings should still override them, preserving compatibility and existing behavior. The values can be modified with DI XML or an after plugin, so I do not think splitting it out further is necessary. This should minimize risk of breaking changes.

Reference: https://github.com/rhoerr/mageos-magento2/blob/de194a0185ee3c03cb7c9d14c6b1802486b5ea07/app/code/Magento/Cms/Model/Wysiwyg/DefaultConfigProvider.php

I have not checked or updated any applicable MFTF tests, as we don't use that testing suite.

Story

Bug

Task

Fixed Issues (if relevant)

Builds

Related Pull Requests

mage-os/mageos-magento2#109

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

Checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

[fballiano]

it seems perfect