Fix CI for node 20 / pnpm 10: e2e Playwright image and jest arg forwarding

- frontend/Dockerfile.e2e: bump base image to mcr.microsoft.com/playwright:
  v1.61.1-noble to match the Playwright 1.61.1 npm bump (browser revision
  mismatch was failing all e2e specs), and corepack pnpm@8 -> pnpm@10.10.0 to
  match the pnpm bump and the v9 lockfile.
- release.yml validate: pnpm 10 forwards 'test -- --runInBand' literally as
  'jest -- --runInBand' (treated as a path pattern, 0 tests). Drop the extra
  separator: 'pnpm test --runInBand'.

.github/workflows/release.yml

@@ -74,7 +74,7 @@ jobs:
         run: |
           pnpm lint
           pnpm type-check
-          pnpm test -- --runInBand
+          pnpm test --runInBand
         working-directory: frontend/apps/remark42
         env:
           CI: "true"