Description of problem:
There are following two runs of the test libnm_snapshot_reattach_unmanaged_ports_to_bridge, once device is set unmanaged by udev [1], and once it is additionally set unmanaged by `nmcli dev set portXb managed no` [2]. [1] serves as valid reproducer for bz2035519, but unmanaging device by nmcli makes the test pass (that command should have no effect).

Version-Release number of selected component (if applicable):
1.36.0-2.el8

How reproducible:
always

Steps to Reproduce:
1. run the test libnm_snapshot_reattach_unmanaged_ports_to_bridge
2. uncoment test lines to unmanage ports via nmcli
3. run the test again

Actual results:
step 1. is failing, while step 3. is passing, but 2. should have no effect as device is already unmanaged

Expected results:
Both should fail on affected version, or both should pass on fixed version

Additional info:
[1] https://tools.dqe.lab.eng.bos.redhat.com/fpokryvk/reports/report_NetworkManager-ci_Test0_libnm_snapshot_reattach_unmanaged_ports_to_bridge.html
[2] https://tools.dqe.lab.eng.bos.redhat.com/fpokryvk/reports/report_NetworkManager-ci_Test0_libnm_snapshot_reattach_unmanaged_ports_to_bridge_managed_no.html

(reports are from rhel9, but the same results on rhel8)