move npm-publish to main build workflow

.github/workflows/build.yml

@@ -50,6 +50,32 @@ jobs:
 
   # ----- Only git tag testing + release deployment beyond this point ----- #
 
+  npm-publish:
+    needs: test
+    if: startsWith(github.ref, 'refs/tags/v') ||
+      github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+          registry-url: https://registry.npmjs.org/
+
+      - name: Publish @RC to npm
+        if: contains(github.ref, 'RC')
+        run: npm publish --tag RC
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+      - name: Publish @latest to npm
+        if: contains(github.ref, 'RC') == false
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
   # Publish the build to S3
   publish:
     # Setup