No, no cmdlet for that.
But easy when using the API method.
For example
$vdSwName = 'MyVDSw'
$vdPgName = 'MyVDPg'
$pg = Get-VDPortgroup -Name $vdPgName -VDSwitch $vdSwName
$spec = New-Object VMware.Vim.DVPortgroupConfigSpec
$spec.ConfigVersion = $pg.ExtensionData.Config.ConfigVersion
$spec.AutoExpand = $false
$pg.EXtensionData.ReconfigureDVPortgroup($spec)