test: Added e2e for switch network

[hjetpoluru]

Description

This is e2e PR for switch network

Related issues

Fixes: https://github.com/MetaMask/MetaMask-planning/issues/2906

Manual testing steps

Run the test locally or in codespaces using the below command: yarn yarn build:test:webpack ENABLE_MV3=false yarn test:e2e:single test/e2e/tests/network/switch-network.spec.ts --browser=chrome

• [x] I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• [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 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.