tests: retry flaky Playwright tests.

Author: bznein

.github/workflows/playwright.yml

@@ -60,6 +60,10 @@ jobs:
   run-tests:
     runs-on: ubuntu-latest
     needs: build-simulator
+    strategy:
+      fail-fast: false
+      matrix:
+        attempt: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
     steps:
       - uses: actions/checkout@v3
 
@@ -89,7 +93,7 @@ jobs:
       - name: Restore executable permission
         run: chmod +x simulator-bin/simulator
 
-      - name: Run Playwright tests
+      - name: Run Playwright tests attempt ${{ matrix.attempt }}
         env:
           SIMULATOR_PATH: ${{ github.workspace }}/simulator-bin/simulator
         run: make webe2etest
@@ -98,5 +102,5 @@ jobs:
         if: always()
         uses: actions/upload-artifact@v4
         with:
-          name: playwright-artifacts
+          name: playwright-artifacts-${{ matrix.attempt }}
           path: frontends/web/test-results/*

frontends/web/playwright.config.ts

@@ -34,6 +34,7 @@ export default defineConfig({
   },
   reporter: [['html', { open: 'never' }], ['list']],
   outputDir: 'test-results/',
+  retries: 3,
   projects: [
     {
       name: 'Chromium',