Tests

feat: Add a `ListJoiner` component #15937

Job	Run time
format	15s
check-imports	20s
Unit / ubuntu-latest	3m 37s
Unit / windows-latest	4m 48s
Unit / macos-latest	2m 25s
lint	1m 35s
Integration / macos-latest	6m 20s
Integration / windows-latest	6m 35s
Integration / ubuntu-latest	5m 45s
Tests completed / Mark tests as completed	1s
	31m 41s

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