Connectors: Add API key source detection and refactor REST dispatch #33485

Job	Run time
Determine Matrix	3s
Single Site Default / Test before	3m 44s
Multisite Memcached / Test before	3m 43s
Multisite Default / Test current	3m 45s
Single Site Default / Test current	3m 43s
Single Site Memcached / Test current	3m 43s
Multisite Default / Test before	3m 44s
Multisite Memcached / Test current	3m 44s
Single Site Memcached / Test before	3m 43s
matrix.label	0s
Slack Notifications	0s
Failed workflow tasks	1s
	29m 53s

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