Description

Related issues

Fixes: https://consensyssoftware.atlassian.net/browse/MMS-1798

Manual testing steps

1. Load bridge page
2. Select amount, src token and dest token
3. Click token switch button to swap src and dest selections
4. Verify that src amount is preserved

Screenshots/Recordings

Before

Amount is cleared

After

Amount is preserved

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• 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 format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). 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.