Description

Update the TransactionController patch to not update the last fetched block number if the new value is lower than the previous one.

This in turn prevents excess incomingTransactionBlock events being emitted which stops the duplicate notifications.

Related issues

Fixes: #8948

Manual testing steps

1. Use account with previous incoming token transfer.
2. Send native balance to same account.
3. Verify incoming transaction notification is shown only once.

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained what problem this PR is solving and how it is solved.
• I've linked related issues
• I've included manual testing steps
• I've included screenshots/recordings if applicable
• 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.
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  • In case it's not yet "ready for review", I've set it to "draft".
  • In case it's "ready for review", I've changed it from "draft" to "non-draft".

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.