EgressIP which configured on secondary NIC didn't failover to available egress node when original egress node NotReady

pre-merge testing

Always

1. Label two nodes as egress node
oc get node worker-1  --show-labels
NAME       STATUS   ROLES    AGE   VERSION           LABELS
worker-1   Ready    worker   18h   v1.27.3+e123787   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,k8s.ovn.org/egress-assignable=,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker-1,kubernetes.io/os=linux,node-role.kubernetes.io/worker=,node.openshift.io/os_id=rhcos
 % oc get node worker-2  --show-labels
NAME       STATUS   ROLES    AGE   VERSION           LABELS
worker-2   Ready    worker   18h   v1.27.3+e123787   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,k8s.ovn.org/egress-assignable=,kubernetes.io/arch=amd64,kubernetes.io/hostname=worker-2,kubernetes.io/os=linux,node-role.kubernetes.io/worker=,node.openshift.io/os_id=rhcos
2. Created an egressIP object and the egressIP in secondary NIC subnet
oc get egressip        
NAME        EGRESSIPS      ASSIGNED NODE   ASSIGNED EGRESSIPS
egressip2   172.22.0.100   worker-1        172.22.0.100

3. Reboot worker-1 

4. Check egressIP object

Before worker-1 came to Reday, egressIP didn't failover to worker-2, just no egress node assigned and kept in below status for about 4 minutes until worker-1 Ready.
% oc get egressip
NAME        EGRESSIPS      ASSIGNED NODE   ASSIGNED EGRESSIPS
egressip2   172.22.0.100  

egressIP should failover to other available egress node