Setting `playing` to true and then to false on the same frame results in `playing` still being true

[kus04e4ek]

Tested versions

Regression from #87061

System information

Ubuntu 22.04.4 LTS 22.04

Issue description

AudioStreamPlayerInternal::stop doesn't set setplay unlike AudioStreamPlayer2D::stop and AudioStreamPlayer3D::stop do

Steps to reproduce

Set playing to true and then to false on the same frame. playing will still be true

Minimal reproduction project (MRP)

MRP

[kus04e4ek]

Some additional notes:

• Thanks to raulsntos for noticing that set_playing(false) is different from stop() in Expose AudioStreamPlayer{2D,3D}::set_playing and remove AudioStreamPlayer::{2D,3D}::_is_active #95375
• is_playing probably causes some issues with AudioStreamPlayerInternal::seek too, but didn't check yet