The key button next to the slot can be too delayed to turn back from orange to its original color.

[misaki-eymard]

Description:
If you change the visibility state of an attachment with Auto Key off, the key buttons next to the slot turn orange, but if you immediately move the timeline bar, the key buttons stay orange while you drag the timeline bar. This behavior can be seen in the following video:
https://github.com/user-attachments/assets/68615480-bc0e-4ec2-b537-2eba998e308a

This could be confusing, so it would be better to have the key buttons return to color when you start dragging the timeline bar.

Expected behavior:
When the timeline bar changes position, the key button color changes back from orange to the original color.

Steps to reproduce:

1. Open the spineboy-pro.spine.
2. Switch to animate mode and select run animation.
3. Turn off Auto Key to hide the mouth-grind attachment.
4. Once you see that the key button next to the mouth slot has turned orange, drag the timeline bar on the dopesheet view. (Note that if you click anywhere before you start dragging, you will not be able to reproduce this issue.)
5. You will see that the button stays orange for a while after you start dragging.

The version of Spine in which this issue was found:
Spine 4.2.36

This issue was reported in the following thread on the forum:
https://esotericsoftware.com/forum/d/26786-4236%E7%89%88%E6%9C%AC%E8%AE%BE%E7%BD%AE%E5%85%B3%E9%94%AE%E5%B8%A7%E5%87%BA%E9%94%99%E5%92%8C%E5%8A%A8%E7%94%BB%E5%AF%BC%E5%85%A5%E5%87%BA%E9%94%99