Refactor: Fixed the PHPCS issues in the atomlib.php file #12376

Job	Run time
Core running from build / Core running from build / Linux	2m 9s
Core running from src / Core running from src / Linux	1m 59s
Core running from src / Core running from src / Windows	4m 46s
Core running from build / Core running from build / MacOS	2m 32s
Core running from src / Core running from src / MacOS	2m 2s
Core running from build / Core running from build / Windows	3m 49s
Gutenberg running from build / Gutenberg running from build / Linux	8m 33s
Gutenberg running from src / Gutenberg running from src / Linux	8m 28s
Gutenberg running from build / Gutenberg running from build / Windows	12m 13s
Gutenberg running from src / Gutenberg running from src / Windows	12m 0s
Gutenberg running from build / Gutenberg running from build / MacOS	9m 53s
Gutenberg running from src / Gutenberg running from src / MacOS	9m 53s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 18m 17s

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