Build/Test Tools: Do not download extra browsers in performance tests.

Props euthelup, johnbillion, mukesh27.
Fixes #62822.

git-svn-id: https://develop.svn.wordpress.org/trunk@59669 602fd350-edb4-49c9-b593-d223f7449a82

Author: swissspidy

.github/workflows/reusable-performance.yml

@@ -39,6 +39,10 @@ on:
 env:
   PUPPETEER_SKIP_DOWNLOAD: ${{ true }}
 
+  # Prevent wp-scripts from downloading extra Playwright browsers,
+  # since Chromium will be installed in its dedicated step already.
+  PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: true
+
   # Performance testing should be performed in an environment reflecting a standard production environment.
   LOCAL_WP_DEBUG: false
   LOCAL_SCRIPT_DEBUG: false