chore(runway): cherry-pick fix: fix default swap destination token when source is USDC (#15627)

- fix: cp-7.47.0 fix default swap destination token when source is USDC
(#15611)

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## **Description**

General default destination token for swaps is USDC, but if the source
token is USDC then the destination should be the network's native gas
token.

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Write a short description of the changes included in this pull request,
also include relevant motivation and context. Have in mind the following
questions:
1. What is the reason for the change?
2. What is the improvement/solution?
-->

## **Related issues**

Fixes:

## **Manual testing steps**

1. Go to Solana account
2. Select USDC from balances page
3. Click "Swap" button within asset page
4. See SOL is default destination token

## **Screenshots/Recordings**

<!-- If applicable, add screenshots and/or recordings to visualize the
before and after of your change. -->

### **Before**

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### **After**

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## **Pre-merge author checklist**

- [x] 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).
- [x] I've completed the PR template to the best of my ability
- [x] I’ve included tests if applicable
- [x] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [x] 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.
[0f97c52](0f97c52)

Author: sethkfman

CHANGELOG.md

@@ -37,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
  ### Fixed
 
+ - fix(bridge): fix default swap destination token when source is USDC ([#15611](https://github.com/MetaMask/metamask-mobile/pull/15611))
  - fix(multi-srp): display multichain accounts in SRP list ([#14724](https://github.com/MetaMask/metamask-mobile/pull/14724))
  - fix(confirmations): remove transaction simulations from wallet initiated send flow ([#14994](https://github.com/MetaMask/metamask-mobile/pull/14994))
  - fix(bridge): add auto slippage option and improve slippage selection UI ([#15159](https://github.com/MetaMask/metamask-mobile/pull/15159))

app/components/UI/Bridge/hooks/useInitialDestToken/index.ts

@@ -5,6 +5,7 @@ import { selectChainId } from '../../../../../selectors/networkController';
 import { RouteProp, useRoute } from '@react-navigation/native';
 import { BridgeRouteParams } from '../../Views/BridgeView';
 import { BridgeViewMode, BridgeToken } from '../../types';
+import { getNativeSourceToken } from '../useInitialSourceToken';
 
 // Need to pass in the initial source token to avoid a race condition with useInitialSourceToken
 // Can't just use selectSourceToken because of race condition
@@ -18,7 +19,13 @@ export const useInitialDestToken = (initialSourceToken?: BridgeToken) => {
 
   if (destToken) return;
 
-  const defaultDestToken = DefaultSwapDestTokens[chainId];
+  let defaultDestToken = DefaultSwapDestTokens[chainId];
+
+  // If the initial source token is the same as the default dest token, set the default dest token to the native token
+  if (initialSourceToken?.address === defaultDestToken?.address) {
+    defaultDestToken = getNativeSourceToken(chainId);
+  }
+
   if (
     isSwap &&
     defaultDestToken &&

app/components/UI/Bridge/hooks/useInitialDestToken/useInitialDestToken.test.ts

@@ -33,6 +33,16 @@ jest.mock('../../../../../selectors/networkController', () => {
   };
 });
 
+jest.mock('../useInitialSourceToken', () => ({
+  getNativeSourceToken: jest.fn().mockReturnValue({
+    address: '0x456',
+    symbol: 'NATIVE',
+    decimals: 18,
+    name: 'Native Token',
+    chainId: 'solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp',
+  }),
+}));
+
 describe('useInitialDestToken', () => {
   const mockSourceToken: BridgeToken = {
     address: '0x123',
@@ -109,6 +119,12 @@ describe('useInitialDestToken', () => {
       state: initialState,
     });
 
-    expect(setDestToken).not.toHaveBeenCalled();
+    expect(setDestToken).toHaveBeenCalledWith({
+      address: '0x456',
+      symbol: 'NATIVE',
+      decimals: 18,
+      name: 'Native Token',
+      chainId: 'solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp',
+    });
   });
 });