…` action to `TransactionPayController` init messenger (#30425)

## **Description**

Add `TransactionControllerIsAtomicBatchSupportedAction` to the
`TransactionPayControllerInit` messenger. This enables the init
messenger to delegate the `TransactionController:isAtomicBatchSupported`
action, which is needed during controller initialization to check atomic
batch support.

Companion to MetaMask/metamask-extension#42809.

## **Changelog**

CHANGELOG entry: null

## **Related issues**

Fixes: #42781

## **Manual testing steps**

1. Build the app with `yarn start:ios` or `yarn start:android`
2. Verify the app loads without errors
3. Verify transaction pay functionality works as expected

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## **Screenshots/Recordings**

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## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [x] I've completed the PR template to the best of my ability
- [ ] I've included tests if applicable
- [x] 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-extension/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**
> Low risk: adds a single delegated messenger action used during
initialization, with no changes to transaction execution or signing
behavior.
> 
> **Overview**
> Allows `TransactionPayController` initialization to query atomic batch
capability by **adding delegation for**
`TransactionController:isAtomicBatchSupported`.
> 
> This extends `TransactionPayControllerInit` messenger types/imports to
include `TransactionControllerIsAtomicBatchSupportedAction` and
delegates the new action via `rootMessenger.delegate`.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
b81e10b. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->