fix(multiclient): store videos into artifacts folder

[Skn0tt]

Discovered through #36685

[github-actions]

Test results for "tests 1"

1 failed
❌ [playwright-test] › runner.spec.ts:118:5 › should ignore subprocess creation error because of SIGINT @macos-latest-node18-1

4 flaky

⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1079:7 › cli codegen › should not throw csp directive violation errors @firefox-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @ubuntu-latest-node22-1
⚠️ [webkit-page] › page/page-add-locator-handler.spec.ts:184:5 › should work with toHaveScreenshot @webkit-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @windows-latest-node18-1

46741 passed, 926 skipped
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Merge workflow run.