resource id issue of role definition

role definition can have different scope, the id format should be in this format `/{scope}/providers/Microsoft.Authorization/roleDefinitions/{roleDefinitionId}`.
when the scope is `Subscription`, the id format is right.
- Subscription: `/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Authorization/roleDefinitions/{roleDefinitionID}`

however, when the scope is `Resource Group`, the expected resource id should be `/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.Authorization/roleDefinitions/{roleDefinitionID}`, but actually, the id is `/subscriptions/00000000-0000-0000-0000-000000000000/providers/Microsoft.Authorization/roleDefinitions/{roleDefinitionID}`

when the scope is `Management Group`, the expected resource id should be `/providers/Microsoft.Management/managementGroups/group1/providers/Microsoft.Authorization/roleDefinitions/{roleDefinitionID}`, but actually, the id is `/providers/Microsoft.Authorization/roleDefinitions/{roleDefinitionID}`

it's not consistent, is it by design or a bug?

https://github.com/terraform-providers/terraform-provider-azurerm/issues/6695
https://github.com/terraform-providers/terraform-provider-azurerm/pull/6787
https://github.com/terraform-providers/terraform-provider-azurerm/issues/8251

Start by reading the linked Terraform issue 6695, pull request 6787, and issue 8251 alongside the role definition specification. Compare the documented resource ID formats for subscription, resource-group, and management-group scopes; done means the specification clearly establishes consistent behavior or records the confirmed design decision.

Written by the indexing model from the issue text.