Twenty Twenty: Fix Pullquote block letter case setting. #24449

Job	Run time
QUnit Tests / Run QUnit tests	3m 51s
Slack Notifications / Prepare notifications	5s
Slack Notifications / Success notifications	4s
Slack Notifications / Failure notifications	0s
Slack Notifications / Cancelled notifications	0s
Slack Notifications / Fixed notifications	0s
Failed workflow tasks	0s
	4m 0s

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