fix(leather-wallet): cache wallet connection with daily expiry and improve wallet reconnection reliability

[tomiiide]

Which Jira task is linked to this PR?

https://lifi.atlassian.net/browse/LF-16080

Relates to lifinance/widget#579

What was done

The problems

1. Leather wallet does not persist dapp connections. While the connector saves connection state locally and attempts to reconnect via getAddresses() on refresh, the wallet itself is unaware of any previous connection and treats each call as a new connection request, resulting in a repeated popup for every page refresh.
2. Leather Wallet reconnection would hang indefinitely when slow/problematic wallets (like Ctrl, Oyl) took too long to respond.

https://leather.gitbook.io/developers/methods/getaddresses#sandbox

The solutions

1. Cache leather wallet connections with a daily expiry
2. Added timeouts (5s) to prevent slow wallets from blocking the entire reconnection process
   • Parallel processing with immediate state updates - users see connections as they become available

[callMeTheQA]

@tomiiide can we merge/close this pr?