Fix ESM builds

[nicholasio]

Description of the Change

Closes #

How to test the Change

Changelog Entry

Added - New feature Changed - Existing functionality Deprecated - Soon-to-be removed feature Removed - Feature Fixed - Bug fix Security - Vulnerability

Credits

Props @username, @username2, ...

Checklist:

• [ ] I agree to follow this project's Code of Conduct.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my change.
• [ ] All new and existing tests pass.

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Name	Status	Preview	Comments	Updated (UTC)
headstarwp	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 7, 2024 4:26pm

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🦋 Changeset detected

Latest commit: 20995dc68396d4ff59bd3001770fa3292d332ea0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

| Name | Type | | ----------------- | ----- | | @headstartwp/core | Patch | | @headstartwp/next | Patch |

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📦 Next.js Bundle Analysis for @10up/headless_framework

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This PR introduced no changes to the JavaScript bundle! 🙌