Simplify chunked octree traversals #73

Job	Run time
Build (ubuntu-20.04)	1m 2s
Build (ubuntu-22.04)	1m 11s
Build (ubuntu-24.04)	1m 6s
Clang tidy	2m 46s
Test (ubuntu-20.04)	1m 38s
Test (ubuntu-22.04)	1m 29s
Test (ubuntu-24.04)	1m 21s
Sanitize undefined behavior	10m 47s
Sanitize addressability and leaks	5m 49s
Valgrind memcheck	16m 18s
Sanitize data races and deadlocks	4m 19s
	47m 46s

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