[plasma-mobile] missing oxygen sounds

Describe your issue

Plasma Mobile uses the oxygen sound scheme for notifications and audio feedback. In postmarketos, however, these are missing in /usr/share/sounds/. If you copy the files from an existing plasma installation into the directory, the sounds are played as expected.

What's the expected behaviour?

A ringtone should be audible before calls and various sounds should be played for different events (new message received, charging cable connected, battery empty, etc.).

What's the current behaviour?

When calling, the phone only vibrates without playing a ringtone, and the phone remains silent when there are new messages or other events.

How to reproduce your issue?

install postmarketos on a xiaomi-beryllium (tianna) using the precompiled images from images.postmarketos.org

What device are you using?

xiaomi-beryllium (tianna panel)

On what postmarketOS version did you encounter the issue?

• edge (master branch)

• v22.12

• I confirm that the issue still is present after running sudo apk upgrade -a

On what environment did you encounter the issue?

Environments

• Phosh
• Plasma Mobile
• Sxmo (Wayland/Sway) Please post the output of sxmo_version.sh
• Other: Please fill out

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device

What's the build date of the image? (in yyyy-mm-dd format)

Additional information