### Description
Hi,
There is mandatory parameter iam_role_name parameter for GlueJobOperator/GlueJobHook.
It adds additional step of translating it to the arn, which needs  connectivity to the global iam AWS endpoint (no privatelink availabale).
For private setups it needs opening connectivity + proxy configuration to make it working.  
It would be great to have also possibility to just pass directly iam_role_arn and avoid this additional step.
### Use case/motivation

Role assignation does not need external connectivity, possibility of adding arn instead of the name.

### Related issues

_No response_

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

mock_conn.get_job.assert_called_once_with(JobName=expected_job_name)
        mock_conn.create_job.assert_called_once_with(
            Command={},
            Description=job_description,
            ExecutionProperty={"MaxConcurrentRuns": 2},
            MaxCapacity=5,
            MaxRetries=3,
            Name=expected_job_name,
            Role=role_name_arn,
        )
        mock_conn.update_job.assert_not_called()
        assert result == expected_job_name
    @mock.patch.object(GlueJobHook, "get_iam_execution_role")
    @mock.patch.object(GlueJobHook, "conn")
    def test_create_or_update_glue_job_update_existing_job(self, mock_conn, mock_get_iam_execution_role):
        """
        Calls 'create_or_update_glue_job' with a existing job.
        Should update existing job configurations.
        """
        job_name = "aws_test_glue_job"
        job_description = "This is test case job from Airflow"
        role_name = "my_test_role"
        role_name_arn = "test_role"
        some_script = "s3://glue-examples/glue-scripts/sample_aws_glue_job.py"
        some_s3_bucket = "my-includes"
        mock_conn.get_job.return_value = {
            "Job": {
                "Name": job_name,
                "Description": "Old description of job",
                "Role": role_name_arn,