Fix npm publish - Run "npm ci" and "npm run node" under node 18 then switch to node 24.5 (#2192)

Fixes a problem where some generated files were not included in the npm package as they hadn't been built.

.github/workflows/releases.yml

@@ -105,6 +105,18 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Set node version
+        uses: actions/setup-node@v6
+        with:
+          node-version: 18
+          registry-url: "https://registry.npmjs.org"
+
+      - name: Install
+        run: npm ci
+
+      - name: Create machine generated files
+        run: npm run node
+
+      - name: Reset node version ready for publish
         uses: actions/setup-node@v6
         with:
           node-version: ^24.5