Tolerate `NoSourceCodeSeen` errors for CCR #2415

Job	Run time
Upload debug artifacts (nightly-latest)	6m 28s
Upload debug artifacts (stable-v2.20.3)	5m 58s
Upload debug artifacts (default)	6m 30s
Upload debug artifacts (linked)	6m 42s
Download and check debug artifacts	7s
	25m 45s

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