Intune Update Ring not applying to co-managed Windows 11 device

This scenario was already addressed in the original post. I have already checked Configured update policies, Group Policy, local policy, WSUS, and the per-category scan-source settings. I am aware that the device isn't currently reaching Microsoft Update, but we haven't found an active on-premises update-source policy causing this behavior, so this does not appear to be the issue in this case.