Container App Deployment Broken - type rename to environmentType is not accepted correctly

It seems that a recent rename of `type` to `environmentType` broke the deployment of container apps:

https://github.com/Azure/azure-rest-api-specs/blob/bbc623e46174253535ed0393d073741069ce9c31/specification/web/resource-
manager/Microsoft.Web/stable/2021-03-01/KubeEnvironments.json#L519

When running a deployment now, the following error occurs:

```
error: Code="BadRequest" Message="KubeEnvironment is invalid. Must specify either AksResourceID or ArcConfiguration or 'type' must be 'Managed'." Details=[{"Message":"KubeEnvironment is invalid. Must specify either AksResourceID or ArcConfiguration or 'type' must be 'Managed'."},{"Code":"BadRequest"},{"ErrorEntity":{"Code":"BadRequest","ExtendedCode":"51021","Message":"KubeEnvironment is invalid. Must specify either AksResourceID or ArcConfiguration or 'type' must be 'Managed'.","MessageTemplate":"{0} is invalid. {1}","Parameters":["KubeEnvironment","Must specify either AksResourceID or ArcConfiguration or 'type' must be 'Managed'."]}}]
```

Start with specification/web/resource-manager/Microsoft.Web/stable/2021-03-01/KubeEnvironments.json around line 519 and compare the renamed field with the deployment error. Reproduce the container app deployment and verify that the resulting request is accepted without the reported KubeEnvironment validation error.

Written by the indexing model from the issue text.