UI/themes: Fix control button pressed color in rachni theme

[shiina424]

Description

The control button pressed color does not change in the Rachni theme. This issue does not occur in version 30.1.2. Use the code in Rachni.qss (version 30.1.2) I'm not sure if this change is correct, so please close if it's wrong.

Before

https://github.com/user-attachments/assets/e8738c40-7a42-4e52-82af-6c54b02446f4

After

https://github.com/user-attachments/assets/c2101d0d-0442-4f87-94eb-bf8fb1c12f8a

Motivation and Context

A user reported this bug on X (formerly Twitter). I want to solve the problem.

How Has This Been Tested?

I changed the Yami_Rachni.ovt file. I’m not sure if the code changes are correct.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• [ ] My code has been run through clang-format.
• [x] I have read the contributing document.
• [x] My code is not on the master branch.
• [ ] The code has been tested.
• [x] All commit messages are properly formatted and commits squashed where appropriate.
• [x] I have included updates to all appropriate documentation.

[RytoEX]

What is the first version of OBS Studio where this issue occurs?

[shiina424]

@RytoEX

30.2.0-beta1 Delete Rachni.qss Add Yami_Rachni.ovt https://github.com/obsproject/obs-studio/commit/a3a8f6dbfb28f892fcbdc0cd3eaf73a219b5929a