feat(pie-checkbox-group): DSW-1937 a11y improvements #8726

Job	Run time
dependency-changeset	0s
lint-styles	55s
Get change type	1m 18s
lint-js	1m 4s
build-ubuntu-node-18 / install-build	1m 30s
build-windows-node-20 / install-build	2m 56s
build-ubuntu-node-20 / install-build	1m 28s
unit-tests	2m 7s
browser-tests-components	2m 35s
deploy-docs	0s
release	0s
deploy-storybook / deploy	1m 35s
browser-tests-docs	0s
check-all-jobs	2s
	15m 30s

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