internal env with WP 2/2

nested_newInfrastructureSubnetTemplate.bicep

resource vnet_previewRG_9b4e_infra_subnet 'Microsoft.Network/virtualNetworks/subnets@2020-07-01' = {
  name: 'vnet-previewRG-9b4e/infra-subnet'
  properties: {
    delegations: [
      {
        name: 'Microsoft.App.environments'
        id: '/subscriptions/<subid>/resourceGroup/vnet-previewRG-9b4e/providers/Microsoft.Network/availableDelegations/Microsoft.App.environments'
        type: 'Microsoft.Network/availableDelegations'
        properties: {
          serviceName: 'Microsoft.App/environments'
          actions: [
            'Microsoft.Network/virtualNetworks/subnets/join/action'
          ]
        }
      }
    ]
    serviceEndpoints: []
    addressPrefix: '10.0.0.0/23'
  }
}