Bugzilla

### Steps to reproduce
1. Launch Firefox with a clean profile.
2. Restart the browser in order to enable the new menu.
3. Navigate to a website and tap on 3 dots menu.
4. Check the subtext displayed for Extensions menu item.

### Expected behavior
'Try a recommended extension' text is displayed. 

### Actual behavior
'No extensions enabled' text together with the gear icon is briefly displayed before being replaced by 'Try a recommended extension'.

### Device information
* Firefox version: Firefox for Android Nightly 141 (2025-06-18)
* Android device model: Samsung S24 Ultra (Android 15) and Xiaomi 12T (Android 12)

### Additional information:
* This issue reproduces only when opening the menu for the first time.

### Steps to reproduce
1. Go in Private Mode or set the app theme to Dark.
2. Navigate to a website and tap on 3 dots menu.
3. Check the following menu items: 
  a) 'Off' state from 'Desktop site'
  b) Chevron icon + the counter (if there are extensions installed) from 'Extensions'
  c) The Extensions blocking numbers
  d) Chevron Icon from "Less" 

### Expected behavior
All the elements from a) -> d) displays a background in Private and Dark mode.

### Actual behavior
The menu elements from a) -> d) don't have a background in Private and Dark mode.

### Device information
* Firefox version: Firefox for Android Nightly 141 (2025-06-18)
* Android device model: Samsung S24 Ultra (Android 15) and Xiaomi 12T (Android 12)