Feat: Add Lisk and Lisk Sepolia logos

[ricott1]

Description

• Add Lisk mainnet and testnet name and icon support.

Related issues

Fixes:

N/A

Manual testing steps

Lisk

1. Add Lisk network, from instance from https://blockscout.lisk.com/
2. Click on the network selection button on the top left.
3. Check the logo for the newly added Lisk network.

Lisk Sepolia

1. Add Lisk Sepolia, from instance from https://sepolia-blockscout.lisk.com/
2. Click on the network selection button on the top left.
3. Check the logo for the newly added Lisk Sepolia network.

Screenshots/Recordings

Before

After

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.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[ricott1]

The optional 'test-e2e-swap-playwright' job keeps failing but I think it's completely unrelated to this PR.