HTML API: Add select handling #1440

Job	Run time
Core running from build / Core running from build / Linux	2m 4s
Core running from src / Core running from src / Linux	1m 55s
Core running from build / Core running from build / Windows	3m 31s
Core running from src / Core running from src / Windows	3m 12s
Core running from build / Core running from build / MacOS	3m 25s
Core running from src / Core running from src / MacOS	6m 8s
Gutenberg running from build / Gutenberg running from build / Linux	8m 13s
Gutenberg running from src / Gutenberg running from src / Linux	8m 19s
Gutenberg running from build / Gutenberg running from build / Windows	13m 12s
Gutenberg running from src / Gutenberg running from src / Windows	10m 58s
Gutenberg running from build / Gutenberg running from build / MacOS	21m 19s
Gutenberg running from src / Gutenberg running from src / MacOS	22m 5s
Leave WordPress Playground details	2s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 44m 23s

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