webengine 6.8.0-1 breaks mp3 playback

Description: 6.8.0-1 breaks audio tags

Additional info:

Using a program like Anki and directly including an mp3 as <audio> tag, play()back now fails with:

DOMException: The element has no supported sources.

Downgrading to Qt 6.7 brought it back (while the packages where still available).

• Anki 24.06.3-2

Involved packages are at least:

• qt6-webengine 6.8.0-1
• python-pyqt6 6.8.0dev2410141303-1.1
• python-pyqt6-webengine 6.7.0-2

I don't know which causes it nor if it's resolved once pyqt6-webengine gets updated (since its 2410141303 tarball fails to compile).

At first glance <video> tags seem unaffected (I don't otherwise use them).