OKX connect failure disconnects wrong provider

[satoshai-dev]

Problem

In stacks-wallet-provider.tsx, the connect catch block calls:

getSelectedProvider()?.disconnect?.();

But the OKX code path never calls setSelectedProviderId() before the await getOKXStacksAddress() call. If there was a previously connected provider, the catch block will disconnect that provider instead of OKX.

Fix

Either:

• Call setSelectedProviderId for OKX before the await
• Or skip the getSelectedProvider()?.disconnect?.() call when the failed provider is OKX

Context

Identified during code review of PR #2.