feat: Implement wallet_revokePermissions method and add tests

[qvkare]

Implements the wallet_revokePermissions method using Privy's logout functionality. Replaces the existing TODO in usePrivyCrossAppProvider.ts.

The wallet_revokePermissions method needs to handle wallet disconnection in the Privy context. We used Privy's logout method because:

1. It properly cleans up the user's session
2. It follows Web3 standards for permission revocation
3. It maintains consistency with Privy's authentication flow

Code Changes

Before:
case 'wallet_revokePermissions':
  // TODO: do we need to do anything here?
  return null;

After:
case 'wallet_revokePermissions': {
  try {
    await logout?.();
    return null;
  } catch (error) {
    throw new ProviderRpcError(4001, 'User rejected the request.');
  }
}

Testing

✅ All tests pass
✅ No breaking changes

---

PR-Codex overview

This PR focuses on implementing the wallet_revokePermissions method in the usePrivyCrossAppProvider, along with corresponding tests to handle permission revocation and potential logout failures.

Detailed summary

• Implemented wallet_revokePermissions method in usePrivyCrossAppProvider.
• Added a local ProviderRpcError class for error handling.
• Updated the usePrivy hook to include logout.
• Created tests for wallet_revokePermissions in usePrivyCrossAppProvider.test.ts.
• Handled successful and failed logout scenarios in tests.

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[changeset-bot]

🦋 Changeset detected

Latest commit: d80e08a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@abstract-foundation/agw-react	Patch

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