Media control bugs

[ghost]

Background player:

• Doesn't show track/channel name

Popup player:

• Doesn't provide album art

Newpipe's own media control in notification drawer is not affected by this.

[ghost]

Some screenshots make it more clear

[ghost]

I see duplicates for this issue, but they don't mention different behavior of bg and popup players

[gkeegan]

Phone name and Android version?

[cool-student]

the issue is that our current notifications don't have a mediaSession / playback state attached to them and also we don't correctly set the metadata for the album art.

@helght I'm aware of this issue and this will be fixed as part of my notification improvements, I do need a few more days though so I hope you can be a bit patient.