Fix error with Heartbeat settings in edit-form-blocks.php #10053

Job	Run time
Core running from build / Core running from build / Linux	2m 4s
Core running from src / Core running from src / Linux	2m 0s
Core running from build / Core running from build / Windows	4m 7s
Core running from src / Core running from src / Windows	4m 24s
Core running from build / Core running from build / MacOS	2m 9s
Core running from src / Core running from src / MacOS	1m 41s
Gutenberg running from build / Gutenberg running from build / Linux	8m 23s
Gutenberg running from src / Gutenberg running from src / Linux	8m 37s
Gutenberg running from build / Gutenberg running from build / Windows	12m 30s
Gutenberg running from src / Gutenberg running from src / Windows	11m 3s
Gutenberg running from build / Gutenberg running from build / MacOS	7m 35s
Gutenberg running from src / Gutenberg running from src / MacOS	7m 24s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 11m 57s

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