HTML API: Add select handling #1437

Job	Run time
Core running from build / Core running from build / MacOS	5m 52s
Core running from src / Core running from src / MacOS	3m 27s
Gutenberg running from build / Gutenberg running from build / Linux	6m 3s
Gutenberg running from src / Gutenberg running from src / Linux	7m 42s
Gutenberg running from build / Gutenberg running from build / Windows	6m 0s
Gutenberg running from src / Gutenberg running from src / Windows	5m 53s
Core running from build / Core running from build / Linux	2m 8s
Core running from src / Core running from src / Linux	1m 57s
Core running from build / Core running from build / Windows	3m 14s
Core running from src / Core running from src / Windows	3m 41s
Gutenberg running from build / Gutenberg running from build / MacOS	5m 59s
Gutenberg running from src / Gutenberg running from src / MacOS	6m 5s
Leave WordPress Playground details	1s
Slack Notifications	1s
Failed workflow tasks	1s
	58m 4s

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