A version that tracks the underlying distro better, or even closer to mainline. Current WSL2 kernel is 6.6, kernel is 6.12 or 6.15. Debian Trixie will be 6.12.
strace shows that the sleep program uses clock_nanosleep, which is theoretically "passive." However, if the host suspends and then wakes up after the sleep period should have ended, it continues as if it were "active."