test: structure ramps mocks (#26635)

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## **Description**

The purpose of this PR is to clean up and restructure the mock responses
for ramps

## **Changelog**

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CHANGELOG entry:

## **Related issues**

Fixes:

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
```

## **Screenshots/Recordings**

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### **Before**

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### **After**

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## **Pre-merge author checklist**

- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
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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
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in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Test-only change, but it rewires the on-ramp E2E mocking layer and
alters mocked quote/checkout/order-polling behavior, so it could cause
widespread test flakiness or failures if any endpoints/patterns don’t
match real calls.
> 
> **Overview**
> Refactors the ramps/on-ramp E2E mocks into **modular, region-aware
helpers** and splits the previously monolithic `ramps-mocks.ts` data
into dedicated `ramps/responses/*` fixtures.
> 
> The new `setupRegionAwareOnRampMocks` now composes mocks for
geolocation/eligibility, catalog endpoints, quote polling, checkout (buy
+ callback), token icon assets, and a **stateful order-status** endpoint
that transitions `PENDING` → `COMPLETED` during polling.
> 
> Updates default mocks and multiple ramps smoke/regression specs (and
cardholder mocks) to import the new response modules and to use
`setupRegionAwareOnRampMocks` from `ramps-mocks`, while removing the old
`ramps-region-aware-mock-setup.ts` and the oversized quotes fixture in
favor of a **single-quote** response.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
160bb1f. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: cortisiko

tests/api-mocking/mock-responses/cardholder-mocks.ts

@@ -1,8 +1,8 @@
 import { TestSpecificMock } from '../../framework/types.ts';
 import { DEFAULT_FIXTURE_ACCOUNT } from '../../framework/fixtures/FixtureBuilder.ts';
 import { setupMockRequest } from '../helpers/mockHelpers.ts';
-import { createGeolocationResponse } from './ramps/ramps-geolocation.ts';
-import { RAMPS_NETWORKS_RESPONSE } from './ramps/ramps-mocks.ts';
+import { createGeolocationResponse } from './ramps/responses/ramps-geolocation.ts';
+import { RAMPS_NETWORKS_RESPONSE } from './ramps/responses/ramps-networks-response.ts';
 import { RampsRegions, RampsRegionsEnum } from '../../framework/Constants.ts';
 import { ethers } from 'ethers';
 

tests/api-mocking/mock-responses/defaults/onramp-apis.ts

@@ -3,13 +3,11 @@ import {
   RampsRegions,
   RampsRegionsEnum,
 } from '../../../framework/Constants.ts';
-import {
-  RAMPS_NETWORKS_RESPONSE,
-  RAMPS_TOP_TOKENS_RESPONSE,
-  RAMPS_PROVIDERS_RESPONSE,
-  RAMPS_PAYMENTS_V2_RESPONSE,
-} from '../ramps/ramps-mocks.ts';
-import { createGeolocationResponse } from '../ramps/ramps-geolocation.ts';
+import { RAMPS_NETWORKS_RESPONSE } from '../ramps/responses/ramps-networks-response.ts';
+import { RAMPS_TOP_TOKENS_RESPONSE } from '../ramps/responses/ramps-tokens-response.ts';
+import { RAMPS_PROVIDERS_RESPONSE } from '../ramps/responses/ramps-providers-response.ts';
+import { RAMPS_PAYMENTS_V2_RESPONSE } from '../ramps/responses/ramps-payments-response.ts';
+import { createGeolocationResponse } from '../ramps/responses/ramps-geolocation.ts';
 
 /**
  * Mock data for on-ramp API endpoints used in E2E testing.