No sound with pipewire after updating fedora 34 guest system

[Vsevolod Popov]

After updating the newly installed fedora 34 and restarting the guest system, there is no sound output because of the pipewire activation. Steps to reproduce:

1. Create a new virtual machine.
2. Install fedora 34 workstation or fedora 34 mate spin on it.
3. After starting the system, try to play any audio. You will notice that it works because pulseaudio is used.
4. Install the new version of virtualbox guest additions.
5. Update the machine with sudo dnf update command in terminal.
6. Restart the guest machine.

Expected result: After restarting the virtual machine, audio should continue working. Actual result: When launching orca screen reader or playing any other audio file, nothing plays and audio output doesn't work. While testing, ICH AC97 driver was used. Also, this issue appears with intel hd audio controller selected.

[Vsevolod Popov]

Virtualbox machine log.

[Vsevolod Popov]

The dump of audio output