Azure MAG install failed by Terraform error ‘Error ensuring Resource Providers are registered’ 

4.14.0-0.nightly-2023-07-27-172239 

Always

1. Create MAG Azure cluster with IPI 

Fail to create the installer when ‘Creating infrastructure resources…’

In terraform.log: 
2023-07-29T11:33:02.938Z [ERROR] provider.terraform-provider-azurerm: Response contains error diagnostic: @module=sdk.proto tf_proto_version=5.3 tf_provider_addr=provider tf_req_id=45c10824-360b-b211-1ba1-9c3a722014af @caller=/go/src/github.com/openshift/installer/terraform/providers/azurerm/vendor/github.com/hashicorp/terraform-plugin-go/tfprotov5/internal/diag/diagnostics.go:55 diagnostic_detail= diagnostic_severity=ERROR diagnostic_summary="Error ensuring Resource Providers are registered.Terraform automatically attempts to register the Resource Providers it supports to
ensure it's able to provision resources.If you don't have permission to register Resource Providers you may wish to use the
"skip_provider_registration" flag in the Provider block to disable this functionality.Please note that if you opt out of Resource Provider Registration and Terraform tries
to provision a resource from a Resource Provider which is unregistered, then the errors
may appear misleading - for example:> API version 2019-XX-XX was not found for Microsoft.FooCould indicate either that the Resource Provider "Microsoft.Foo" requires registration,
but this could also indicate that this Azure Region doesn't support this API version.More information on the "skip_provider_registration" flag can be found here:
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs#skip_provider_registrationOriginal Error: determining which Required Resource Providers require registration: the required Resource Provider "Microsoft.CustomProviders" wasn't returned from the Azure API" tf_rpc=Configure timestamp=2023-07-29T11:33:02.937Z
2023-07-29T11:33:02.938Z [ERROR] vertex "provider[\"openshift/local/azurerm\"]" error: Error ensuring Resource Providers are registered.Terraform automatically attempts to register the Resource Providers it supports to
ensure it's able to provision resources.If you don't have permission to register Resource Providers you may wish to use the
"skip_provider_registration" flag in the Provider block to disable this functionality.Please note that if you opt out of Resource Provider Registration and Terraform tries
to provision a resource from a Resource Provider which is unregistered, then the errors
may appear misleading - for example:> API version 2019-XX-XX was not found for Microsoft.FooCould indicate either that the Resource Provider "Microsoft.Foo" requires registration,
but this could also indicate that this Azure Region doesn't support this API version.More information on the "skip_provider_registration" flag can be found here:
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs#skip_provider_registrationOriginal Error: determining which Required Resource Providers require registration: the required Resource Provider "Microsoft.CustomProviders" wasn't returned from the Azure API

Create the installer should succeed. 

Suspect that issue with https://github.com/openshift/installer/pull/7205/, IPI install on Azure MAG with 4.14.0-0.nightly-2023-07-27-051258 is OK