fix(bridge-ui): balance not updating on manual wallet connect

[CodeDragonVN]

Issue:

I experienced a lack of balance update when manually connecting my wallet to the bridge interface. The balance should display immediately upon connection, but I saw that "Balance: N/A" remained even after a successful wallet connection. This issue did not occur when the wallet auto-connected, it was only present when I needed to click the 'Connect Wallet' button.

Cause:

I believe the cause is in the onNetworkChange function, which has a condition that both srcChain and destChain must be present to update the balance. This logic fails to account for cases where a user manually connects their wallet without a previous network change.

Resolution:

To solve this, I modified the onNetworkChange function so the balance updates even if only the srcChain is present, which typically occurs when manually connecting a wallet. The updated logic now checks for the existence of destChain, and if absent, proceeds with undefined. The functions getTokenBalance in bridge-ui/src/libs/token/fetchBalance.ts and getAddress in bridge-ui/src/libs/token/getAddress.ts seem unaffected by these changes since they can handle an undefined value for destChainId.

[KorbinianK]

@CodeDragonVN Valid bug, however not the right fix. This is more of a workaround that happens to work but not addressing the underlying issue.

OnNetwork will be removed in an upcoming release anyway and only OnNetwork remains. A fix will be added then.

Still, thanks for raising this and looking into it.