Description of problem:
Do postcopy migration with unix+proxy transport, break proxy, postcopy migration failed. Try to recover migration before proxy is fixed, it failed as expected. Then fix the proxy, and try to recover migration again, it still failed ans said:
"error: Requested operation is not valid: QEMU reports migration is still running"

Version-Release number of selected component (if applicable):
libvirt-8.5.0-2.el9.x86_64
qemu-kvm-7.0.0-9.el9.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Start a vm

2. Set up proxy between src and dest host
1) On dest host:

1. socat tcp-listen:22222,reuseaddr,fork unix:/var/run/libvirt/virtqemud-sock
2. socat tcp-listen:33333,reuseaddr,fork unix:/tmp/33333-sock
   2) On src host:
3. socat unix-listen:/tmp/sock,reuseaddr,fork tcp:<dest_host>:22222
4. socat unix-listen:/tmp/33333-sock,reuseaddr,fork tcp:<dest_host>:33333

2.Migrate vm to other host with unix transport:

1. virsh migrate uefi qemu+unix:///system?socket=/tmp/sock --live --postcopy --undefinesource --persistent --bandwidth 3 --postcopy-bandwidth 3 --migrateuri unix:///tmp/33333-sock

3.Switch migration to postcopy

1. virsh migrate-postcopy uefi

4. Break this proxy, migration will fail immediately:

1. socat tcp-listen:33333,reuseaddr,fork unix:/tmp/33333-sock

5. Try to recover postcopy migration, it failed as expected:

1. virsh migrate uefi qemu+unix:///system?socket=/tmp/sock --live --postcopy --undefinesource --persistent --bandwidth 3 --postcopy-bandwidth 3 --migrateuri unix:///tmp/33333-sock --postcopy-resume
   error: operation failed: job 'migration in' failed in post-copy phase

6. Fix proxy

7. Try to recover postcopy migration, it failed unexpected:

1. virsh migrate uefi qemu+unix:///system?socket=/tmp/sock --live --postcopy --undefinesource --persistent --bandwidth 3 --postcopy-bandwidth 3 --migrateuri unix:///tmp/33333-sock --postcopy-resume
   error: Requested operation is not valid: QEMU reports migration is still running

8. Try to abort migration:

1. virsh domjobabort uefi --postcopy
   error: internal error: unable to execute QEMU command 'migrate-pause': migrate-pause is currently only supported during postcopy-active state

Actual results:
postcopy recovery failed in step7

Expected results:
postcopy recovery can succeed in step7

Additional info:
Can't reproduce with tcp transport.