fix: handle null receive addresses in TopUpBalanceModal and AddressLi…

[Maphikza]

Fix: Handle Null Receive Addresses in TopUpBalanceModal

Problem

When there are no receive addresses returned from the API, the application fails to handle the null/empty array properly, potentially causing errors or a poor user experience.

Solution

This PR implements proper error handling and empty state management for the receive addresses functionality:

Changes in TopUpBalanceModal.tsx:

• Added an error state to track and display API errors
• Modified API response handling to ensure we always have a valid array with response.data || []
• Added conditional rendering to show either error messages or the address list
• Improved error handling with user-friendly error messages

Changes in AddressList.tsx:

• Added a styled EmptyMessage component to display when there are no addresses
• Implemented a check at the beginning of the component to handle empty or null address arrays
• Added a user-friendly message "No receiving addresses available at the moment"

Benefits

• Improved application stability by preventing errors when no addresses are available
• Enhanced user experience with clear feedback when no addresses are found
• Consistent error handling pattern that can be applied to other components