fix: fix problem not connecting wallet on several consecutive changes

[clostao]

Fixed bug that leaded into wallets not connecting correctly after several consecutive network changes

Description

The problem was that Connectors weren't correctly disconnecting. Now when connector changes the previous gets disconnected as long as it is a wallet.

Checklists

I have verified in uTrade, uBridge, Shell sample app...

• [x] WalletConnect works fine
• [x] Network changes correctly

[jsertx]

lgtm