Fix unreserve logic

[smorimoto]

Summary

• fix unreserve so it updates the internal reserved list
• remove the previously added unit test

Testing

• corepack enable && yarn test (fails: Couldn't find the node_modules state file)

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Latest commit: 2a2f241

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[Copilot]

Pull Request Overview

This PR fixes the unreserve logic so that the internal list of reserved names is properly updated.

• The unreserve method now assigns the filtered result back to this.reservedNames.
• The previously added unit test was removed.

Comments suppressed due to low confidence (1)

src/util/name-resolver.ts:33

• Assigning the filtered result back to this.reservedNames addresses the bug where the list was not updated; please verify that this change resolves the issue consistently.

this.reservedNames = this.reservedNames.filter(