HTML API: Ensure elements with special newline rules are correctly normalized #26284

Job	Run time
Core running from build / Windows	9m 22s
Core running from src / Linux	4m 12s
Core running from build / Linux	4m 24s
Core running from build / MacOS	10m 54s
Core running from src / MacOS	4m 5s
Core running from src / Windows	9m 59s
Slack Notifications	0s
Failed workflow tasks	0s
	42m 56s

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