[Wallet Gateway] disconnect and reconnect doesn't work

steps to reproduce:
- Start example app with canton
- connect 
- disconnect
- connect (again)

you will get the error:
```
Error requesting wallets: Error: HTTP error! status: 401, text: {"jsonrpc":"2.0","id":"ac261a63-01c5-413a-aa2b-dae76ba43f18","error":{"code":4100}} 
```