Add new textAlign block support #5951

Job	Run time
Core running from build / Core running from build / Linux	2m 11s
Core running from src / Core running from src / Linux	1m 57s
Core running from build / Core running from build / Windows	3m 12s
Core running from src / Core running from src / Windows	3m 13s
Core running from build / Core running from build / MacOS	2m 17s
Core running from src / Core running from src / MacOS	2m 10s
Gutenberg running from build / Gutenberg running from build / Linux	8m 37s
Gutenberg running from src / Gutenberg running from src / Linux	8m 48s
Gutenberg running from src / Gutenberg running from src / Windows	12m 25s
Gutenberg running from build / Gutenberg running from build / Windows	14m 0s
Gutenberg running from build / Gutenberg running from build / MacOS	8m 49s
Gutenberg running from src / Gutenberg running from src / MacOS	9m 34s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 17m 13s

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