QML MediaPlayer Example fails to set playback rate on Android

Description:

The QML Media Player Example fails to set the playback speed on Android platforms, resulting in the inability to control the playback rate as intended.

Steps to Reproduce:

1. Build and run the QML Media Player Example for Android.
2. Load a video file into the MediaPlayer.
3. Attempt to change the video playback speed using the provided controls.{}

Expected Result:

The user should be able to adjust the playback speed of the video to different provided  rates.

Actual Result:

The provided QML MediaPlayer example on Android fails to adjust the video playback speed. The video always plays at a fixed speed of 1x, despite changing the speed from provided controls.