feat(OnyxHeadline): support `showAs` property #6016

Job	Run time
Build and Cache	2m 3s
Check code quality	3m 7s
Component tests / Playwright shard (1)	6m 58s
Component tests / Playwright shard (2)	5m 42s
Component tests / Playwright shard (3)	5m 29s
Component tests / Playwright shard (4)	5m 19s
Component tests / Playwright shard (5)	5m 33s
Component tests / Playwright shard (6)	4m 39s
Component tests / Playwright shard (7)	5m 1s
Component tests / Playwright shard (8)	4m 39s
Component tests / Playwright shard (9)	4m 46s
Component tests / Playwright shard (10)	6m 57s
Component tests / Playwright shard (11)	5m 7s
Component tests / Playwright shard (12)	5m 22s
Component tests / Playwright shard (13)	8m 15s
Component tests / Playwright shard (14)	6m 14s
Component tests / Playwright shard (15)	6m 12s
Component tests / Playwright shard (16)	5m 4s
Component tests / Collect Playwright result	26s
	1h 36m 53s

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