Expose the Patterns menu to the Classic theme #1699

Job	Run time
Core running from build / Core running from build / Linux	2m 5s
Core running from src / Core running from src / Linux	1m 58s
Core running from build / Core running from build / Windows	3m 31s
Core running from src / Core running from src / Windows	3m 26s
Core running from build / Core running from build / MacOS	3m 14s
Core running from src / Core running from src / MacOS	5m 35s
Gutenberg running from build / Gutenberg running from build / Linux	8m 19s
Gutenberg running from src / Gutenberg running from src / Linux	8m 30s
Gutenberg running from src / Gutenberg running from src / Windows	11m 24s
Gutenberg running from build / Gutenberg running from build / Windows	11m 34s
Gutenberg running from build / Gutenberg running from build / MacOS	18m 24s
Gutenberg running from src / Gutenberg running from src / MacOS	12m 34s
Leave WordPress Playground details	2s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 30m 36s

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