Fix missing dependency for useZap (#1420)

This didn't cause any bugs because useWallet returns everything we need on first render.

This caused a bug with E2EE device sync branch though since there the wallet is loaded async.

This meant that during payment, the wallet config was undefined.

components/item-act.js

@@ -277,7 +277,7 @@ export function useZap () {
       const reason = error?.message || error?.toString?.()
       toaster.danger(reason)
     }
-  }, [me?.id, strike])
+  }, [act, me?.id, strike])
 }
 
 export class ActCanceledError extends Error {