Describe the issue you are experiencing

I tried to set it up a RPi4 running the most recent Home Assistant as a bluetooth speaker.
With some fiddling, I got it to pair to my phone and laptop, but sound does not work.
The logs from the audio container show:

E: [pulseaudio] bluez5-util.c: org.bluez.Media1.RegisterEndpoint() failed: org.freedesktop.DBus.Error.UnknownMethod: Method "RegisterEndpoint" with signature "oa{sv}" on interface "org.bluez.Media1" doesn't exist

This seems identical to arkq/bluez-alsa#542 which suggests it is a build configuration problem: bluez (bluetoothd) needs to be built with --enable-a2dp --enable-avrcp

What operating system image do you use?

rpi4 (Raspberry Pi 4/400 32-bit OS)

What version of Home Assistant Operating System is installed?

8.4

Did you upgrade the Operating System.

Yes

Steps to reproduce the issue

1. Enable Bluetooth. This popped up in the UI and I confirmed.
2. Pair a phone or laptop with Bluetooth. I did it by hand by calling DBus methods using the web terminal (I wish there was a UI for it)
3. Connect to Home Assistant from the phone or laptop.

Anything in the Supervisor logs that might be useful for us?

See above

Anything in the Host logs that might be useful for us?

See above

System Health information

No response

Additional information

No response