Script Modules API: Backport - Add import map polyfill #1840

Job	Run time
Core running from build / Core running from build / Linux	2m 5s
Core running from build / Core running from build / Windows	3m 37s
Core running from src / Core running from src / Windows	3m 34s
Core running from src / Core running from src / Linux	1m 54s
Core running from build / Core running from build / MacOS	4m 33s
Core running from src / Core running from src / MacOS	4m 13s
Gutenberg running from build / Gutenberg running from build / Linux	8m 37s
Gutenberg running from src / Gutenberg running from src / Linux	8m 14s
Gutenberg running from build / Gutenberg running from build / Windows	12m 9s
Gutenberg running from src / Gutenberg running from src / Windows	11m 45s
Gutenberg running from build / Gutenberg running from build / MacOS	13m 56s
Gutenberg running from src / Gutenberg running from src / MacOS	14m 49s
Leave WordPress Playground details	3s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 29m 29s

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