Fix metadata generation for computed properties names with enum values

[wilker7ribeiro]

This PR fixes the problem generating metadata for objects that have a computed property key using enum values mentioned in the issue #1264.

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Closing issues

Closes #1264

[github-actions]

Hello there wilker7ribeiro 👋

Thank you and congrats 🎉 for opening your first PR on this project.✨

We will review the following PR soon! 👀

[wilker7ribeiro]

Feel free to review and give me some advice since i'm not familiar with the code base

[WoH]

LGTM, would you mind rebasing this?