Description of problem:
After configuring a AdminPolicyBasedExternalRoute with dynamic nextHop the the route is correctly added in the Gateway Router where the source pod is running, but is not taken into consideration. Also testing with ovn-trace the route used is the default.

Version-Release number of selected component (if applicable):

4.17.14 
How reproducible:
always

Steps to Reproduce:

 1. Create a gateway router pod
 2. Create an AdminPolicyBasedExternalRoute with dynamic nextHop
 3. Start egress traffic from source pods

Actual results:

Traffic using the local host to reach the external destination.

Expected results:
Traffic should be routed to the external gateway pod and reach the destination with external gateway host IP.

Additional info: