fix(cc): fix message passing when nloc is 0 #8598

Job	Run time
Test Python (1, 3.8)	25m 23s
Test Python (1, 3.11)	25m 13s
Test Python (2, 3.8)	26m 10s
Test Python (2, 3.11)	22m 48s
Test Python (3, 3.8)	26m 43s
Test Python (3, 3.11)	24m 11s
Test Python (4, 3.8)	25m 18s
Test Python (4, 3.11)	25m 31s
Test Python (5, 3.8)	26m 10s
Test Python (5, 3.11)	24m 54s
Test Python (6, 3.8)	26m 25s
Test Python (6, 3.11)	24m 57s
Combine and update integration test durations (3.8)	55s
Combine and update integration test durations (3.11)	58s
Pass testing Python	1s
	5h 5m 37s

Provide feedback