5.8 make workflows callable #36281

Job	Run time
PHP 5.6 / PHP 5.6 / Multisite slow tests	3m 16s
PHP 5.6 / PHP 5.6 / Single Site slow tests	3m 2s
PHP 5.6 / PHP 5.6 / Single Site	8m 39s
PHP 5.6 / PHP 5.6 / Multisite	8m 54s
PHP 7.0 / PHP 7.0 / Multisite	5m 36s
PHP 7.0 / PHP 7.0 / Single Site	4m 57s
PHP 7.1 / PHP 7.1 / Single Site	5m 0s
PHP 7.2 / PHP 7.2 / Single Site	5m 8s
PHP 7.1 / PHP 7.1 / Multisite	5m 46s
PHP 7.2 / PHP 7.2 / Multisite	5m 15s
PHP 7.3 / PHP 7.3 / Single Site	4m 55s
PHP 7.3 / PHP 7.3 / Multisite	5m 13s
PHP 7.4 / PHP 7.4 / Single Site	4m 47s
PHP 7.4 / PHP 7.4 / Multisite	5m 5s
PHP 8.0 / PHP 8.0 / Multisite	5m 21s
PHP 8.0 / PHP 8.0 / Single Site	4m 40s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 25m 34s

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