MediaSession not updated after changes to playback speed

Description

Changes to playback speed are not reflected in media controls in the notification bar.

Missing invocation of publishState() after changes to playback speed, which will invoke pscb.setState(state, time, playlistManager.player.getRate())

Steps to reproduce

1. Navigate to "..." menu
2. Update Playback Speed
3. Observe time in media controls steadily fall out of sync with VLC

Context

App version

3.4.0 Beta 3

Android version

Android 11

Device model

Pixel 3

App mode

Smartphone

Auto