Recent History Margin

### Describe the bug

Please see the screenshots below to better understand.

### Expected behavior

The margin should at least be aligned with other entries.

### Screenshots

With Firefox UI Fix

Without Firefox UI Fix

### OS

Windows 11

### OS - Others

N/A

### Firefox Version

Waterfox G6

### Distribution

- [X] [Original Lepton](https://github.com/black7375/Firefox-UI-Fix)
- [ ] [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
- [X] Dark
- [ ] Alpenglow (System: Light)
- [ ] Alpenglow (System: Dark)
- [ ] System Default
- [ ] 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

N/A

### `user.js` setup

N/A

### Additional context

N/A

Start by reproducing the Recent History margin issue in Waterfox G6 on Windows 11 with the original Lepton distribution and dark theme, then compare the provided screenshots. Done means the Recent History margin is aligned with the other entries without changing the reported environment.

Written by the indexing model from the issue text.