Fixes Checkout session token id self reference #559

Job	Run time
Unit test (Chrome)	1m 24s
Check	1m 18s
Integration test with react-recurly	57s
Unit test (Firefox)	1m 30s
Unit test (Safari-Remote)	3m 32s
Unit test (Electron)	1m 35s
Unit test (Edge-Remote)	3m 37s
Unit test (iOS-16-Remote)	2m 24s
Unit test (iOS-15-Remote)	4m 58s
Unit test (Android-13-Remote)	2m 35s
Unit test (Android-12-Remote)	5m 26s
Unit test (Android-11-Remote)	3m 30s
End-to-end test (Chrome-Remote)	2m 14s
End-to-end test (Firefox-Remote)	3m 29s
End-to-end test (Safari-Remote)	5m 59s
End-to-end test (Edge-Remote)	3m 40s
End-to-end test (iOS-16-Remote)	5m 10s
End-to-end test (iOS-15-Remote)	5m 4s
End-to-end test (Android-13-Remote)	3m 3s
End-to-end test (Android-12-Remote)	3m 0s
End-to-end test (Android-11-Remote)	3m 11s
Verify required checks	1s
Publish artifacts	32s
	1h 8m 9s

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