Prisma Cloud Application Security: Why am I seeing the Linux finding "Azure Virtual Machine (Linux) does not authenticate using SSH keys" for my Windows VM defined in Terraform?

Suppose I had the following snippet from my terraform plan file:

"resources": [
    {
        "type": "Microsoft.Compute/virtualMachines",
        "apiVersion": "2021-04-01",
        "name": "[parameters('vmName')]",
        "location": "[parameters('location')]",
        "tags": {
            "owner": "[parameters('vmOwner')]",
            "type": "[parameters('vmType')]"
        },
        "properties": {
            "hardwareProfile": {
                "vmSize": "[variables('vmSize')]"
            },
            "storageProfile": {
                "imageReference": {
                    "id": "[parameters('imageID')]"
                },
                "osDisk": {
                    "createOption": "FromImage",
                    "managedDisk": {
                        "storageAccountType": "[variables('storageAccountType')]"
                    },
                    "diskSizeGB": "[parameters('diskSizeGB')]",
                    "caching": "ReadWrite"
                }
            },
            "networkProfile": {
                "networkInterfaces": [
                    {
                        "id": "[resourceId('Microsoft.Network/networkInterfaces', concat(parameters('vmName'), '-nic'))]"
                    }
                ]
            }
        }
    }
]

As a parameter, the type of VM is specified as "windows":

"vmType": {
    "value": "windows"
}

When Checkov scans this plan file, a finding is shown for the policy: "Azure Virtual Machine (Linux) does not authenticate using SSH keys" - https://docs.prismacloud.io/en/enterprise-edition/policy-reference/azure-policies/azure-networking-policies/bc-azr-networking-1

Why is this finding shown for a Windows VM?

Prisma Cloud
Terraform
Checkov

The following attribute needs to be added in the imageReference block:

properties > storageProfile > imageReference > Add in the attribute "publisher":"Microsoft.Compute"

This is where Checkov looks for the type of VM. As seen from the screenshot above, the finding no longer appears.