test: add a11y tests to showcases #11553

Job	Run time
init / Init	30s
scan-secrets / TruffleHog	40s
build-packages / Build Packages	1m 11s
get-playwright-version / Get and save publish version	32s
lint / Lint	42s
build-showcases / Build Showcases	1m 36s
test-foundations / 🧪🎭 - foundations	1m 10s
build-outputs / Build outputs	55s
test-components / 🧪🎭 - react:1/3	1m 34s
test-components / 🧪🎭 - react:2/3	2m 20s
test-components / 🧪🎭 - react:3/3	1m 31s
test-components / 🧪🎭 - vue:1/3	1m 34s
test-components / 🧪🎭 - vue:2/3	2m 9s
test-components / 🧪🎭 - vue:3/3	1m 32s
test-showcases / 🧪🎭 - angular:1/5	3m 12s
test-showcases / 🧪🎭 - angular:2/5	4m 16s
test-showcases / 🧪🎭 - angular:3/5	4m 18s
test-showcases / 🧪🎭 - angular:4/5	2m 55s
test-showcases / 🧪🎭 - angular:5/5	3m 20s
test-showcases / 🧪🎭 - react:1/5	3m 8s
test-showcases / 🧪🎭 - react:2/5	3m 39s
test-showcases / 🧪🎭 - react:3/5	3m 52s
test-showcases / 🧪🎭 - react:4/5	2m 41s
test-showcases / 🧪🎭 - react:5/5	3m 24s
test-showcases / 🧪🎭 - vue:1/5	3m 9s
test-showcases / 🧪🎭 - vue:2/5	3m 30s
test-showcases / 🧪🎭 - vue:3/5	4m 16s
test-showcases / 🧪🎭 - vue:4/5	2m 54s
test-showcases / 🧪🎭 - vue:5/5	3m 22s
checks-done	1s
regenerate-snapshots / 🧪🎭 - Regenerate snapshots	14m 19s
deploy	0s
	1h 24m 12s

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