Issue/Help with "Update an Interface (v4.19)" DNS Server swap

Describe the problem

if you only change the DNS Servers order.
from this

"ipv4_config": {
        "type": "static",
        "static_config": {
            "address": "10.1.1.1/24"
        },
        "dhcp_config": null,
        "dns_v4_config": {
            "name_servers": [
                "10.2.1.2",
                "10.5.1.2"
            ]
        },
        "routes": null
    } 

to this

"ipv4_config": {
        "type": "static",
        "static_config": {
            "address": "10.1.1.1/24"
        },
        "dhcp_config": null,
        "dns_v4_config": {
            "name_servers": [
                "10.5.1.2",
                "10.2.1.2"
            ]
        },
        "routes": null
    } 

it will not update the dns server order

Suggested fix

update the interface

No file, test, or entry point is named. Start by reproducing the interface update with the two name_servers orders shown, then inspect the Update an Interface (v4.19) path. Done means changing only the DNS server order persists and is reflected when the interface is read back.