Remove playwright install steps from CI workflows

Co-authored-by: dgreif <[email protected]>

Author: Copilot

.github/workflows/nodejs.yml

@@ -13,7 +13,6 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 24
-      - run: npx playwright install chromium
       - name: npm install, build, and test
         run: |
           npm install

.github/workflows/publish.yml

@@ -18,7 +18,6 @@ jobs:
           node-version: 24
           registry-url: https://registry.npmjs.org/
           cache: npm
-      - run: npx playwright install chromium
       - run: npm ci
       - run: npm test
       - run: npm run build