Support for Multiple Wallets in the Staking App

[nutrina]

User Story:

As an end-user,
I want to connect to the staking app using Metamask, WalletConnect, Brave Wallet, and Coinbase Wallet,
so that I can seamlessly stake and unstake GTC from multiple devices.

Acceptance Criteria

GIVEN I am an end-user,
WHEN I navigate to the staking app at http://stake.passport.xyz/,
THEN I should be presented with options to connect using:

• Metamask (on both desktop and mobile devices)
• WalletConnect (across all compatible devices)
• Brave Wallet (on supported devices)
• Coinbase Wallet (on supported devices)

Product & Design Links:

Tech Details:

• Switch over to using Web3Modal, offering support for the four above specified wallet providers.

Open Questions:

Notes/Assumptions:

Ensure compatibility and testing across different platforms and devices for each wallet type.

[lucianHymer]

Taking a break from this task.

Right now, you can log in with walletconnect. But switching chains is only sometimes working. And there are some unhandled errors I haven't tracked down yet in (for example sometimes if you manually switch chains in the metamask mobile app connected with walletconnect).

Also, only a handful of testnets are supported by Rainbow wallet mobile, and OP sepolia isn't one of them.

Browser injected wallets seem to work fine still.

[lucianHymer]

From Erich, report of issue in main branch. Should check this in this branch:

get wagmi error toast and it pops up brave wallet when sign in with ethereum although i didn't select brave

[erichfi]

Team decided to move forward with Web3Modal

[lucianHymer]

Above PR needs to be merged before deployment, but the necessary update has already been done manually in the review env.