chore(testing): Flock lock for playwright tests; Pin node version for OHIF; add more workers (#6099)

* update Cypress apt deps for Ubuntu Noble (drop libgconf-2-4, libasound2→libasound2t64)

.github/workflows/build-docs.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: pnpm/action-setup@0e279bb959325dab635dd2c09392533439d90093 # v6.0.8
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: 24
+          node-version: 24.15.0
           cache: pnpm
 
       - name: Configure git for private repos

.github/workflows/playwright.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [24]
+        node-version: [24.15.0]
     steps:
       - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
@@ -133,7 +133,7 @@ jobs:
       - name: Run Playwright tests
         run: |
           export NODE_OPTIONS="--max_old_space_size=10192"
-          pnpm run test:e2e:coverage
+          bash .scripts/ci/with-nashua-lock.sh pnpm run test:e2e:coverage
 
       # ── Common: collect test results and coverage ───────────────────────
       - name: Create directory of test results