[audio] the playing signal should be changed to false when audio.state is not PLAYING

[chenzhiwei]

Describe the bug

When the audio completes, the playing() signal is still true, so can't use the play button to trigger play again.

The playing signal defined here:
https://github.com/solidjs-community/solid-primitives/blob/82245cf/packages/audio/dev/index.tsx#L70

The setPlaying will always set the playing to true, so it does not trigger play again:
https://github.com/solidjs-community/solid-primitives/blob/82245cf/packages/audio/dev/index.tsx#L81

Minimal Reproduction Link

https://github.com/solidjs-community/solid-primitives/blob/main/packages/audio/dev/index.tsx