feat: step.attach() #28961

Job	Run time
ubuntu-20.04 (chromium tip-of-tree)	16m 1s
Installation Test ubuntu-latest	12m 22s
ubuntu-22.04 (chromium - Node.js 18)	13m 11s
Test Runner (ubuntu-latest, 18, 1, 2)	31m 42s
Installation Test macos-latest	9m 57s
VSCode Extension	31m 14s
ubuntu-22.04 (firefox - Node.js 18)	26m 42s
Test Runner (ubuntu-latest, 18, 2, 2)	7m 40s
Installation Test windows-latest	20m 38s
ubuntu-22.04 (webkit - Node.js 18)	30m 0s
Test Runner (windows-latest, 18, 1, 2)	41m 14s
Web Components	2m 8s
ubuntu-22.04 (chromium - Node.js 20)	13m 28s
Test Runner (windows-latest, 18, 2, 2)	11m 1s
ubuntu-22.04 (chromium - Node.js 22)	12m 52s
Test Runner (macos-latest, 18, 1, 2)	23m 41s
Test Runner (macos-latest, 18, 2, 2)	7m 34s
Test Runner (ubuntu-latest, 20, 1, 2)	29m 15s
Test Runner (ubuntu-latest, 20, 2, 2)	5m 58s
Test Runner (ubuntu-latest, 22, 1, 2)	29m 46s
Test Runner (ubuntu-latest, 22, 2, 2)	5m 57s
	6h 22m 21s

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