resource group or build resource group

_This issue was originally opened by @r32rtb in https://github.com/hashicorp/packer/issues/11256 and has been migrated to this repository. The original issue description is below._

---
#### Overview of the Issue

The debug logging indicates a contradiction of requirements. I need to build in a specific resource group. The error seems to think I need both a resource_group_name and a build_resource_group_name but I can't include both due to needing one or the other.

#### Reproduction Steps

#resource_group_name = "${var.azure_resource_group}"
build_resource_group_name = "${var.azure_resource_group}"

Produces this error:

Error: 2 error(s) occurred:
* Specify either a location to create the resource group in or an existing build_resource_group_name, but not both.

* A resource_group_name must be specified
* Specify either a location to create the resource group in or an existing build_resource_group_name, but not both.

* A resource_group_name must be specified
* A paragraph or two about the issue you're experiencing.

resource_group_name = "${var.azure_resource_group}"
build_resource_group_name = "${var.azure_resource_group}"

Produces this error:

Error: 1 error(s) occurred:
* Specify either a location to create the resource group in or an existing build_resource_group_name, but not both.

on windows-2019.pkr.hcl line 40:

(source code not available)
* Specify either a location to create the resource group in or an existing build_resource_group_name, but not both.

### Packer version

From `packer version`
1.7.4

### Operating system and Environment details

WSL2 Ubuntu

### Log Fragments and crash.log files

Up above in the reproduce steps section.