Description

Having a chain permitted on a dapp, and then removing said network from wallet throws an error when going back to dapp and trying to switch to the currently selected network. Original ticket for the issue is here.

This PR makes sure we properly filter out the deleted network when updating the permission for the currently selected network/s.

Related issues

Fixes:
#15201

Manual testing steps

1. Go to any dapp via in app browser
2. Connect and permit a chain (ex.: Polygon)
3. Go back to wallet
4. Change selected chain (ex.: to Ethereum mainnet)
5. Remove the previously permitted chain from the available networks (ex.: remove Polygon)
6. Go back to dapp and confirm adding the newly selected chain
7. No exception should show up ✅

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Contributor Docs and MetaMask Mobile 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.