chore: Remove unused class DynamicNode

[Eideren]

PR Details

Built on top of #3212, which is why there's a couple of unrelated changes in. See #3212 (comment) for context.

Related Issue

None

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.

[github-actions]

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