fix(ui-ux): handle empty wallet address

[lykalabrada]

What this PR does / why we need it:

Which issue(s) does this PR fixes?:

Fixes #

Additional comments?:

Developer Checklist:

• [ ] Read your code changes at least once
• [ ] Tested on iOS/Android device (e.g, No crashes, library supported etc.)
• [ ] No console errors on web
• [ ] Tested on Light mode and Dark mode*
• [ ] Your UI implementation visually matched the rendered design*
• [ ] Unit tests*
• [ ] Added e2e tests*
• [ ] Added translations*

[github-actions[bot]]

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[github-actions[bot]]

Build preview for DeFiChain Wallet is ready!

Built with commit ee140d87f5a97fa855c3c1fa7aba843df0c8455c

https://expo.io/@defichain/wallet?release-channel=pr-preview-4107