Need Custom Intercom Hold Music / MP3 Recordings interrupt calls in workflow

Hi there, I’d like to request support for custom hold music in Intercom’s phone workflows. It would greatly improve the customer experience if we could upload an MP3 or audio file that plays while the caller is waiting, similar to traditional hold music. Ideally, agents should still be able to answer the call at any time, even while the recording is playing. This would bring Intercom’s call experience closer to an enterprise-grade system and help us maintain a professional, branded phone experience. Thanks!