Fixing issue with Page Builder responsive styles and CMS Blocks

[justinconabree]

Description

Merging

Related Issue

Closes #4044

Acceptance

Verification Stakeholders

Specification

Requires https://github.com/magento/pwa-studio/pull/4028/files to be able to use columns in page builder

Verification Steps

Test scenario(s) for direct fix/feature

Preconditions

1. Create a CMS block with columns
2. Create a CMS Page with columns (with responsive styles) and CMS block

Testing

1. Page should display differently between desktop and mobile

Is Browser/Device testing needed?

No device testing needed. Just change screen size between desktop/mobile.

Breaking Changes (if any)

None

Checklist

• I have added tests to cover my changes, if necessary.
• I have added translations for new strings, if necessary.
• I have updated the documentation accordingly, if necessary.

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