build: add webdriver-manager update & ngcc to postinstall

This is required so that yarn_install can add all generated & downloaded files to the generated bazel filegroups

.circleci/config.yml

@@ -232,8 +232,6 @@ jobs:
     steps:
       - custom_attach_workspace
       - setup_bazel_rbe
-      - run: yarn webdriver-update
-      - run: yarn ngcc
       - run: sudo cp .circleci/bazel.rc /etc/bazel.bazelrc
       - run: yarn bazel:test
 

package.json

@@ -35,6 +35,7 @@
     "validate": "node ./bin/devkit-admin validate",
     "validate-commits": "./bin/devkit-admin validate-commits",
     "preinstall": "node ./tools/yarn/check-yarn.js",
+    "postinstall": "yarn webdriver-update && yarn ngcc",
     "//webdriver-update-README": "ChromeDriver version must match Puppeteer Chromium version, see https://github.com/GoogleChrome/puppeteer/releases http://chromedriver.chromium.org/downloads",
     "webdriver-update": "webdriver-manager update --standalone false --gecko false --versions.chrome 79.0.3945.16",
     "ngcc": "ngcc --properties es2015 browser module main --first-only --create-ivy-entry-points"