test: add a11y tests to showcases #11412

Job	Run time
scan-secrets / TruffleHog	42s
init / Init	1m 20s
build-packages / Build Packages	1m 9s
lint / Lint	37s
get-playwright-version / Get and save publish version	27s
build-showcases / Build Showcases	1m 43s
test-foundations / 🧪🎭 - foundations	2m 53s
build-outputs / Build outputs	51s
test-components / 🧪🎭 - react:1/3	3m 10s
test-components / 🧪🎭 - react:2/3	3m 30s
test-components / 🧪🎭 - react:3/3	3m 9s
test-components / 🧪🎭 - vue:1/3	3m 10s
test-components / 🧪🎭 - vue:2/3	3m 53s
test-components / 🧪🎭 - vue:3/3	3m 21s
test-showcases / 🧪🎭 - angular:1/5	3m 51s
test-showcases / 🧪🎭 - angular:2/5	4m 36s
test-showcases / 🧪🎭 - angular:3/5	4m 44s
test-showcases / 🧪🎭 - angular:4/5	3m 36s
test-showcases / 🧪🎭 - angular:5/5	4m 14s
test-showcases / 🧪🎭 - react:1/5	4m 37s
test-showcases / 🧪🎭 - react:2/5	4m 46s
test-showcases / 🧪🎭 - react:3/5	5m 35s
test-showcases / 🧪🎭 - react:4/5	4m 11s
test-showcases / 🧪🎭 - react:5/5	4m 49s
test-showcases / 🧪🎭 - vue:1/5	3m 34s
test-showcases / 🧪🎭 - vue:2/5	4m 12s
test-showcases / 🧪🎭 - vue:3/5	4m 43s
test-showcases / 🧪🎭 - vue:4/5	2m 33s
test-showcases / 🧪🎭 - vue:5/5	3m 6s
checks-done	1s
regenerate-snapshots / 🧪🎭 - Regenerate snapshots	12m 30s
deploy	0s
	1h 45m 33s

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