fix(step.skip): show a skipped indicator in UI mode

[dgozman]

[github-actions]

Test results for "tests 1"

5 flaky

⚠️ [firefox-page] › tests/page/page-evaluate.spec.ts:403:3 › should throw for too deep reference chain @firefox-ubuntu-22.04-node18
⚠️ [chromium-library] › tests/library/video.spec.ts:379:5 › screencast › should capture navigation @ubuntu-20.04-chromium-tip-of-tree
⚠️ [webkit-library] › tests/library/browsercontext-reuse.spec.ts:50:1 › should reset serviceworker @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/proxy.spec.ts:93:11 › should proxy local network requests › by default › localhost @webkit-ubuntu-22.04-node18
⚠️ [webkit-page] › tests/page/page-set-input-files.spec.ts:147:3 › should upload large file @webkit-ubuntu-22.04-node18

37603 passed, 648 skipped
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Merge workflow run.