test: add a11y tests to showcases #11410

Job	Run time
scan-secrets / TruffleHog	41s
init / Init	1m 18s
lint / Lint	37s
build-packages / Build Packages	1m 3s
get-playwright-version / Get and save publish version	20s
test-components / 🧪🎭 - react:1/3	3m 16s
build-outputs / Build outputs	48s
test-foundations / 🧪🎭 - foundations	2m 53s
test-components / 🧪🎭 - react:2/3	3m 37s
build-showcases / Build Showcases	1m 34s
test-components / 🧪🎭 - react:3/3	3m 12s
test-components / 🧪🎭 - vue:1/3	3m 10s
test-components / 🧪🎭 - vue:2/3	3m 37s
test-components / 🧪🎭 - vue:3/3	3m 13s
test-showcases / 🧪🎭 - angular:1/5	3m 48s
test-showcases / 🧪🎭 - angular:2/5	4m 34s
test-showcases / 🧪🎭 - angular:3/5	4m 58s
test-showcases / 🧪🎭 - angular:4/5	3m 15s
test-showcases / 🧪🎭 - angular:5/5	3m 59s
test-showcases / 🧪🎭 - react:1/5	3m 29s
test-showcases / 🧪🎭 - react:2/5	3m 50s
test-showcases / 🧪🎭 - react:3/5	4m 37s
test-showcases / 🧪🎭 - react:4/5	3m 6s
test-showcases / 🧪🎭 - react:5/5	3m 45s
test-showcases / 🧪🎭 - vue:1/5	3m 32s
test-showcases / 🧪🎭 - vue:2/5	4m 19s
test-showcases / 🧪🎭 - vue:3/5	4m 44s
test-showcases / 🧪🎭 - vue:4/5	2m 36s
test-showcases / 🧪🎭 - vue:5/5	3m 10s
checks-done	1s
regenerate-snapshots / 🧪🎭 - Regenerate snapshots	13m 8s
deploy	0s
	1h 40m 10s

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