Description of problem:
when create a http_proxy by API or by CLI, the http_proxy can list by the api and cli, but it can not display on satellite web UI

Version-Release number of selected component (if applicable):
Satellite6.15 snapshot 4.0
katello-4.11.0-1.el8sat.noarch

How reproducible:
100%

Steps to Reproduce:
1.Create http proxy by api

1. curl --insecure -H "accept:application/json,version=2" -H "content-type:application/json" -X POST -d '
   Unknown macro: {"name"}

   ' -k -u admin:admin https://satellite.example.com:443/api/v2/http_proxies/

   {"id":4,"name":"testapi","url":"https://testapi.com:3434","username":null,"password":null,"cacert":null}

   2.List the http proxy by API and hammer CLI, can list it
   [root@dell-per740-68-vm-07 ~]# curl -X GET -k -u admin:admin https://satellite.example.com:443/api/v2/http_proxies/4

   Unknown macro: {"id"}

1. hammer http-proxy info --name testapi
   Id: 4
   Name: testapi
   Username:
   URL: https://testapi.com:3434
   Organizations:
   Default Organization

3. search it by Satellite http proxy UI , go to Infrastructure->HTTP Proxies
search the http proxy, there is no http proxy for "testapi"

4. Create http proxy by hammer CLI

1. hammer http-proxy create --name test --url https://test.com:3434 --organization-id 1
   Http proxy created.

5.list the http proxy by API and Hammer CLI

1. hammer http-proxy info --name test
   Id: 3
   Name: test
   Username:
   URL: https://test.com:3434
   Organizations:
   Default Organization

1. curl -X GET -k -u admin:admin https://satellite.example.com:443/api/v2/http_proxies/3
   Unknown macro: {"id"}

6. search it by Satellite http proxy UI , go to Infrastructure->HTTP Proxies
search the http proxy, there is no http proxy for "testapi"

Actual results:

Expected results:

Additional info: