Improve error for Metamask in-app browser

[anxolin]

Add a better message for Metamask in-app browser

Aparently Metamask in-app browswe response for adding the network return a different code and message than the SAME app using Wallet Connect.

This PR just makes sure we handle the error message better to show the following message:

Test

• Try to add the network in Metmask
• Make sure we show this message

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
mevblocker-web	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 19, 2023 2:33pm

[anxolin]

@elena-zh for some reason i cannot assign you as reviewer. But maybe you could double check this one with low prio

[elena-zh]

Hey @anxolin , when I open the app in the mobile MM browser, everything works as you described! However, I noticed that on the 1st attempt to add the network to MM I see the this message (connected using WC)

When I press once again on the button, I see the correct message

Is this OK?