Build/Test Tools: Download Chromium for E2E tests only.

This prevents Chromium from being downloaded in workflows where it is not required.

See #49621, #50649, #50401.

git-svn-id: https://develop.svn.wordpress.org/trunk@49227 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/coding-standards.yml

@@ -85,6 +85,8 @@ jobs:
   jshint:
     name: JavaScript coding standards
     runs-on: ubuntu-latest
+    env:
+      PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2

.github/workflows/javascript-tests.yml

@@ -7,6 +7,9 @@ on:
       - '*.*'
   pull_request:
 
+env:
+  PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}
+
 jobs:
   # Runs the QUnit tests for WordPress.
   #

.github/workflows/verify-npm-on-windows.yml

@@ -7,6 +7,9 @@ on:
       - '*.*'
   pull_request:
 
+env:
+  PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}
+
 jobs:
   # Verifies that installing NPM dependencies and building WordPress works on Windows.
   #