Simplify npm publish step in workflow

[gracepark]

Removed npm whoami command from publish workflow as we migrated to OIDC. The NODE_AUTH_TOKEN is no longer needed.

[Copilot]

Pull request overview

This PR simplifies the npm publish GitHub Actions workflow by removing an explicit npm whoami check and eliminating usage of NODE_AUTH_TOKEN, aligning the publish step with npm OIDC/trusted publishing + provenance generation.

Changes:

• Remove npm whoami from the publish step.
• Remove NODE_AUTH_TOKEN usage for npm publish, relying on OIDC instead.

Show a summary per file

File	Description
.github/workflows/publish.yml	Simplifies the npm publish step to use OIDC (no NODE_AUTH_TOKEN) while keeping provenance publishing enabled.

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• Comments generated: 0

[gracepark]

@TylerJDev - Thank you for the ✅! Would you be able to merge this for me when you have a chance? I currently get:

You're not authorized to push to this branch. Visit https://docs.github.com/repositories/configuring-branches-and-merges-in-your-repository/managing-protected-branches/about-protected-branches for more information.

[TylerJDev]

@gracepark, can do! I'll do this for other approved PRs as well.