Color Picker Popup Is Obscured On "Guides -> Theming -> Creating Dynamic Theme Colors" Documentation On Both v5 and v6

### Current behaviour

Color picker popup is not fully shown. I can't fill the color manually because the input is obscured. This happens for primary, secondary, and tertiary color pickers. I don't know if this happens on another platform, but I'm currently using Firefox 155.0 at the time of writing.

### Expected behaviour

The color picker should be fully shown.

### How to reproduce?

1. Go to **React Native Paper** documentation site (v5 or v6).
2. Navigate to **Guides -> Theming -> Creating Dynamic Theme Colors**.
3. Scroll down to the custom theme builder / color picker section and click any color input.

### Preview

**Primary Color Picker**

**Secondary Color Picker**

**Tertiary Color Picker**

### What have you tried so far?

I was able to show the whole thing by changing the "div" element with "color-picker-popup" class, "position" style to "relative" instead of "absolute". But it also grows the parent "tr" element.

**Modified Element**

### Your Environment

| software | version
| --------------------- | -------
| ios | N/A
| android | N/A
| react-native | N/A
| react-native-paper | v5 / v6 (docs site)
| node | N/A
| npm or yarn | N/A
| expo sdk | N/A
| Firefox | 155.0

React Native Paper の Guides → Theming → Creating Dynamic Theme Colors のドキュメントページから始め、カスタムテーマビルダーを調査します。特に、color-picker-popup クラスを使用している要素を確認してください。各カラーピッカーで Firefox 上の問題を再現し、その後、周囲のレイアウトを崩すことなく、ポップアップと手動のカラー入力が完全に表示されることを確認してください。

索引モデルが issue の本文から書いたものです。