SEC-10095 test(cypress): demote unstable tests (#36099)

* test(cypress): demote unstable tests

* follow fixes

* fix merging playwright reports

e2e-tests/.ci/server.run_playwright.sh

@@ -37,7 +37,7 @@ EOF
 
 # Run Playwright test
 # NB: do not exit the script if some testcases fail
-${MME2E_DC_SERVER} exec -i -u "$MME2E_UID" -- playwright bash -c "cd e2e-tests/playwright && npm run test:ci -- ${TEST_FILTER}" | tee ../playwright/logs/playwright.log || true
+${MME2E_DC_SERVER} exec -i -u "$MME2E_UID" -- playwright bash -c "cd e2e-tests/playwright && npm run test:ci -- ${TEST_FILTER} ${PW_SHARD:-}" | tee ../playwright/logs/playwright.log || true
 
 # Collect run results
 # Documentation on the results.json file: https://playwright.dev/docs/api/class-testcase#test-case-expected-status