Improving voice messages

[rapterjet2004]

• fixes further improve voice messages #6093

🚧 TODO

• when starting to play another voice message while the first one is played back, the pause button of the first one should be replayed with the play button
• it would be nice if the middle center of the circle would be the marker to color the vertical lines. Right now it seems to be the right border of the circle

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔖 Capability is checked or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/24846764223/artifacts/6607329931
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/24893204070/artifacts/6626109472
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[mahibi]

i rebased on master an d fixes the conflicts.

I see this behavior:
sometimes it happens that the play button of one message controls the playback in another message

[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/25908980894/artifacts/7013499506
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)