Admin UI: Reskin notices to align with WordPress Design System #25143

Job	Run time
Core running from build / Linux	7m 29s
Core running from build / MacOS	11m 37s
Core running from src / MacOS	15m 39s
Core running from src / Windows	11m 47s
Core running from src / Linux	7m 2s
Core running from build / Windows	11m 40s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 5m 14s

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