Add Playwright E2E test to create new user #12986

Job	Run time
Core running from src / Core running from src / Linux	1m 59s
Core running from build / Core running from build / Linux	2m 7s
Core running from build / Core running from build / Windows	3m 55s
Core running from src / Core running from src / Windows	4m 42s
Core running from build / Core running from build / MacOS	1m 53s
Core running from src / Core running from src / MacOS	1m 46s
Gutenberg running from build / Gutenberg running from build / Linux	8m 31s
Gutenberg running from src / Gutenberg running from src / Linux	8m 25s
Gutenberg running from build / Gutenberg running from build / Windows	12m 4s
Gutenberg running from src / Gutenberg running from src / Windows	12m 9s
Gutenberg running from build / Gutenberg running from build / MacOS	7m 5s
Gutenberg running from src / Gutenberg running from src / MacOS	8m 51s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 13m 27s

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