feat: improve error message on invalid site-key #498

Job	Run time
Test Unit	3m 59s
Sonar	2m 23s
Build (target:34 compile:34 appcompat: 1.6.1)	3m 55s
Test UI	5m 58s
Build (target:33 compile:34 appcompat: 1.5.1)	4m 0s
Test Benchmark	18m 23s
Build (target:32 compile:34 appcompat: 1.4.2)	3m 49s
Build (target:30 compile:34 appcompat: 1.3.1)	3m 35s
Build (target:30 compile:34 appcompat: 1.3.1)	3m 31s
Diffuse report	6m 10s
Test UI Minified	5m 58s
	1h 1m 41s

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