ci(ecosystem): drop pnpm.overrides.playwright injection from patch-project.ts

Pre-version-bumping each project (so its lockfile resolves playwright >= 1.60
directly) is the right place to enforce the version — overriding it inside
patch-project.ts produced several pitfalls:

- pkg.pnpm.overrides is ignored by npm-managed projects (vitest-playwright-repro
  uses npm); the override never reached the lockfile and the wedge returned
- override targeted the bare `playwright` package, missing vitepress which
  depends on `playwright-chromium`
- writing pkg.pnpm before vp migrate flipped migrator branches and could mask
  upstream pnpm-workspace.yaml overrides on forceFreshMigration projects

The repo.json `"playwright": true` flag still drives the workflow's
"Install Playwright chromium" step; the actual version pinning will be
handled at the upstream project level instead.

Author: fengmk2

ecosystem-ci/patch-project.ts

@@ -24,22 +24,6 @@ const cwd = directory ? join(repoRoot, directory) : repoRoot;
 // run vp migrate
 const cli = process.env.VP_CLI_BIN ?? 'vp';
 
-// Projects that need Playwright (declared via `playwright: true` in repo.json)
-// must use Playwright >= 1.60.0, otherwise `npx playwright install chromium`
-// wedges after the download bar reaches 100% under Node 24.16.0+
-// (microsoft/playwright#40724, fixed in 1.60.0 via microsoft/playwright#40747).
-// Force the version uniformly via pnpm overrides so it covers direct deps,
-// catalog entries, and transitive-only (e.g. @vitest/browser-playwright) cases.
-const needsPlaywright = 'playwright' in repoConfig && repoConfig.playwright;
-if (needsPlaywright) {
-  const pkgPath = join(cwd, 'package.json');
-  const pkg = JSON.parse(await readFile(pkgPath, 'utf-8'));
-  pkg.pnpm ??= {};
-  pkg.pnpm.overrides ??= {};
-  pkg.pnpm.overrides.playwright = '^1.60.0';
-  await writeFile(pkgPath, `${JSON.stringify(pkg, null, 2)}\n`, 'utf-8');
-}
-
 if (project === 'rollipop') {
   const oxfmtrc = await readFile(join(repoRoot, '.oxfmtrc.json'), 'utf-8');
   await writeFile(