const internal/concurrent.nChildren

3 uses

	internal/concurrent (current package)
		hashtriemap.go#L313: 	nChildren     = 1 << nChildrenLog2
		hashtriemap.go#L314: 	nChildrenMask = nChildren - 1
		hashtriemap.go#L323: 	children [nChildren]atomic.Pointer[node[K, V]]