ci: remove registry-url to allow npm Trusted Publisher OIDC to work natively

setup-node with registry-url writes an .npmrc expecting NODE_AUTH_TOKEN
which conflicts with the OIDC flow. Without it, npm uses the OIDC token directly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 2 people

.github/workflows/npm-deploy.yml

@@ -17,7 +17,6 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: '22'
-          registry-url: 'https://registry.npmjs.org'
 
       - run: npm ci