Overriding panel.background dose not affect file tree

[failable]

Check for existing issues

• Completed

Describe the bug / provide steps to reproduce it

Use the below settings

{
  "experimental.theme_overrides": {
    "panel.background": "#ff0000"
  }
}

Before 0.164.0, the background of the file tree will also be updated.

Environment

Zed: v0.164.0 (Zed Preview)
OS: macOS 15.1.0
Memory: 32 GiB
Architecture: x86_64

If applicable, add mockups / screenshots to help explain present your vision of the feature

No response

If applicable, attach your Zed.log file to this issue.

Zed.log