…on android cp-7.69.0 (#27295)

## **Description**

The "Select Network" bottom sheet in the Bridge token selector was not
scrollable on Android.

Tested on both iOS and Android.

## **Changelog**

CHANGELOG entry: Fixed the Bridge "Select Network" bottom sheet not
being scrollable when many networks are available on Android.

## **Related issues**

Fixes: https://consensyssoftware.atlassian.net/browse/SWAPS-4252
Fixes: #27290

## **Manual testing steps**

```
Feature: Bridge token selector network filter

  Scenario: user scrolls the network list in the Select Network bottom sheet
    Given the user is on the Bridge screen
    And many networks are available

    When user taps the network filter pill above the token list
    Then the Select Network bottom sheet opens

    When user attempts to scroll the network list
    Then the list scrolls smoothly without dismissing the sheet

    When user taps a network
    Then the sheet closes and the token list is filtered to that network
```

## **Screenshots/Recordings**

### **Before**

<!-- List clipped, vertical pan dismissed the sheet instead of scrolling
-->

### **After**




https://github.com/user-attachments/assets/006154c0-b0a3-482d-8c23-be4cfbb37085





<!-- Full network list scrollable -->

## **Pre-merge author checklist**

- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I've included tests if applicable
- [ ] I've documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] I've applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Small UI gesture-handling change limited to the Bridge network
selector; no auth, security, or data-flow logic is modified.
> 
> **Overview**
> Fixes the Bridge token selector "Select Network" bottom sheet not
scrolling on Android by switching the network list container to
`ScrollView` from `react-native-gesture-handler`, which correctly
handles scroll gestures inside the bottom sheet.
> 
> Removes the unused `BridgeNetworkSelectorBase` component that
previously wrapped children in a bottom sheet + `react-native`
`ScrollView`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
d3b24db. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->