Mixture in favo menu's Firefox 146.0

### Describe the bug

After upgrade to Firefox 146.0 there is a mixture of colours in the favo menu.
I use "Horizontal wood" theme, and now the favo pull down menu from the top is white, and the favo menu on the left hand side is grey background and black text?.
In previous version of Firefox they where white background and black text.

### Expected behavior

colour scheme as in version Firefox 145, that is white background and black text!

See my attached screenshot

### Screenshots


### OS

Windows 11

### OS - Others

_No response_

### Firefox Version

146.0.0 (64 Bits)

### Distribution

- [ ] [Original Lepton](https://github.com/black7375/Firefox-UI-Fix)
- [x] [Lepton's photon style](https://github.com/black7375/Firefox-UI-Fix/tree/photon-style)
- [ ] [Lepton's proton style](https://github.com/black7375/Firefox-UI-Fix/tree/proton-style)

### Theme

- [ ] Light
- [ ] Dark
- [ ] Alpenglow (System: Light)
- [ ] Alpenglow (System: Dark)
- [ ] System Default
- [x] Others: (e.g. [Photon Colors](https://addons.mozilla.org/en-US/firefox/addon/photon-colors/), [Google Chrome Dark](https://addons.mozilla.org/en-US/firefox/addon/google-chrome-dark/), [Fairytale Of Nature](https://addons.mozilla.org/en-US/firefox/addon/fairytale-of-nature/))

### Theme - More Info

_No response_

### `user.js` setup

user.js setup

```javascript
// Your settings
```

### Additional context

I still have version ui-fix 8.73 installed, had issues with the favo icons as described in #1141

Reproduce the issue on Windows 11 with Firefox 146, the photon-style distribution, the Horizontal wood theme, and the reported favo menus; compare the result with Firefox 145. Trace the theme styling responsible for the top pull-down and left-side menus, and consider the issue resolved when both use a white background with black text as described.

Written by the indexing model from the issue text.