test: add a11y tests to showcases #11570

Job	Run time
init / Init	1m 11s
scan-secrets / TruffleHog	43s
lint / Lint	46s
get-playwright-version / Get and save publish version	18s
build-packages / Build Packages	1m 5s
build-showcases / Build Showcases	1m 37s
build-outputs / Build outputs	53s
test-foundations / 🧪🎭 - foundations	2m 47s
test-components / 🧪🎭 - react:1/3	3m 6s
test-components / 🧪🎭 - react:2/3	3m 45s
test-components / 🧪🎭 - react:3/3	3m 4s
test-components / 🧪🎭 - vue:1/3	3m 17s
test-components / 🧪🎭 - vue:2/3	3m 43s
test-components / 🧪🎭 - vue:3/3	3m 6s
test-showcases / 🧪🎭 - angular:1/5	3m 36s
test-showcases / 🧪🎭 - angular:2/5	4m 18s
test-showcases / 🧪🎭 - angular:3/5	4m 34s
test-showcases / 🧪🎭 - angular:4/5	4m 17s
test-showcases / 🧪🎭 - angular:5/5	4m 47s
test-showcases / 🧪🎭 - react:1/5	4m 29s
test-showcases / 🧪🎭 - react:2/5	5m 0s
test-showcases / 🧪🎭 - react:3/5	5m 33s
test-showcases / 🧪🎭 - react:4/5	4m 16s
test-showcases / 🧪🎭 - react:5/5	4m 49s
test-showcases / 🧪🎭 - vue:1/5	3m 33s
test-showcases / 🧪🎭 - vue:2/5	4m 21s
test-showcases / 🧪🎭 - vue:3/5	4m 31s
test-showcases / 🧪🎭 - vue:4/5	2m 42s
test-showcases / 🧪🎭 - vue:5/5	3m 20s
checks-done	1s
regenerate-snapshots / 🧪🎭 - Regenerate snapshots	14m 16s
deploy	0s
	1h 47m 44s

Provide feedback