Delete and re-create package-lock.json. (#3882)

This also installs a particular Prettier version, for stable linting, and explicitly installs the Playwright browsers in the web_tests github action. It's unclear which change inside package-lock.json made the browsers unavailable within the GH action.

.github/workflows/web_tests.yml

@@ -57,6 +57,8 @@ jobs:
 
       - run: npm config set script-shell bash --global
       - run: npm run setup
+      - name: Install playwright browsers
+        run: npx playwright install --with-deps
       - run: npm run build --if-present
 
       - name: Run web test runner

package.json

@@ -93,6 +93,7 @@
     "lodash.template": ">=4.5.0",
     "minimist": ">=1.2.8",
     "path-parse": ">=1.0.7",
+    "prettier": "^3.2.5",
     "regenerator-runtime": "^0.14.1",
     "rollup": "^4.17.2",
     "rollup-plugin-babel-minify": "^10.0.0",