fix: fix walletconnect source validation

[elefantel]

Description

This PR fixes a request source validation check for walletconnect. We previously checked if the metadata url matches the origin. However the origin could be wc::https://appkit-lab.reown.com/ or wc::https://opensea.io for example.

Related issues

Fixes: SDK-56

Manual testing steps

1. Go to WallectConnect Dapp
2. Connect using MetaMask
3. Perform a transaction
4. Check the MetaMask mobile analytics on Segment
5. The request_source should be WalletConnect

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.

[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.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud