The SSH key is not put in the guest if creating VM with "Create and edit"

[yunmingyang]

Description of problem:
Create a VM with "Create and edit" and a SSH key, then modify the network to "Direct attachment", then run the VM and wait until the VM boot completely. After that, log in the guest, and check the .ssh/authorized_keys, no public key found

Version-Release number of selected components (if applicable):
cockpit-300.1-1.el8_9.x86_64
cockpit-machines-301.1.2.gb0140b7-1.fc38.noarch
libvirt-dbus-1.3.0-2.module+el8.9.0+18724+20190c23.x86_64

How reproducible:
100%

Steps to Reproduce:
1 Create a VM with "Create and edit" and a SSH key
2 Modify the network to "Direct attachment"
3 Run the VM and wait until the VM boot completely
4 Log in the guest, and checck the .ssh/authorized_keys

Actual results:
1 No public found in .ssh/authorized_keys after step 4

Expected results:
1 The SSH key should be put in .ssh/authorized_keys

Additional info:
If without the step which is "Modify the network to "Direct attachment"", the SSH key will still not be in the .ssh/authorized_keys