Support Chrome for Testing (CfT) download URLs used by Playwright >= 1.57

[0patrik]

Problem

Playwright 1.57+ switched from Chromium to Chrome for Testing builds. The download URLs changed from:

https://playwright.azureedge.net/builds/chromium/{revision}/chromium-linux.zip

to:

https://cdn.playwright.dev/builds/cft/{browserVersion}/linux64/chrome-linux64.zip

The download_paths.json in rules_playwright (v0.5.4) still uses the old builds/chromium/%s/ pattern. Attempting to use Playwright >= 1.57 with rules_playwright results in 404 errors when Bazel tries to fetch browser binaries:

Error downloading [.../builds/chromium/1208/chromium-linux.zip]:
GET returned 404 The specified blob does not exist.

Expected behavior

rules_playwright should support the new CfT download URL format used by Playwright >= 1.57.

Reference

In playwright-core 1.58.2, the download paths are constructed via a cftUrl() helper:

function cftUrl(suffix) {
  return ({ browserVersion }) => ({
    path: `builds/cft/${browserVersion}/${suffix}`,
    mirrors: ["https://cdn.playwright.dev"]
  });
}

// Example entries:
"ubuntu24.04-x64": cftUrl("linux64/chrome-linux64.zip"),
"mac15-arm64": cftUrl("mac-arm64/chrome-mac-arm64.zip"),

Note: ARM64 Linux still uses the old pattern (builds/chromium/%s/chromium-linux-arm64.zip).

Playwright release notes

• https://github.com/microsoft/playwright/releases/tag/v1.57.0 ("Starting with this release, Playwright switches from Chromium, to using Chrome for Testing builds")

[papshed]

++, this forced us to downgrade to 1.56.1 to use rules_playwright.