### 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)

"""
        Get (or creates) and returns the Job name.
        .. seealso::
            - :external+boto3:py:meth:`Glue.Client.create_job`
        :return:Name of the Job
        """
        if self.has_job(self.job_name):
            return self.job_name
        config = self.create_glue_job_config()
        self.log.info("Creating job: %s", self.job_name)
        self.conn.create_job(**config)
        return self.job_name
    def create_or_update_glue_job(self) -> str | None:
        """
        Create (or update) and return the Job name.
        .. seealso::
            - :external+boto3:py:meth:`Glue.Client.update_job`
            - :external+boto3:py:meth:`Glue.Client.create_job`
        :return:Name of the Job
        """
        config = self.create_glue_job_config()
        if self.has_job(self.job_name):
            self.update_job(**config)
        else:
            self.log.info("Creating job: %s", self.job_name)
            self.conn.create_job(**config)
        return self.job_name