FYI this issue was marked fixed by Apple but had not made it into an iOS release yet. See https://bugs.webkit.org/show_bug.cgi?id=262569.
As a workaround, you can request microphone permissions on iOS 17 and audio will come out of all device speakers.
evanmcarlson
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution