Autorest tool does not generate model-cmdlet for 2D arrays correctly

[lijinpei2008]

Swagger: https://github.com/Azure/azure-rest-api-specs/blob/main/specification/eventgrid/resource-manager/Microsoft.EventGrid/preview/2023-06-01-preview/EventGrid.json#L13873

Expected behavior

Correctly generate custom commands with a two-dimensional array of parameters