Formatting: Introduce normalizing function for escaped HTML. #26375

Job	Run time
Core running from build / Linux	4m 14s
Core running from build / MacOS	4m 15s
Core running from src / Linux	4m 4s
Core running from src / MacOS	5m 48s
Core running from src / Windows	8m 12s
Core running from build / Windows	7m 32s
Slack Notifications	0s
Failed workflow tasks	0s
	34m 5s

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