Fix: Missing navigation calls

[tuliomir]

Two instances of navigation calls were missed during the refactor of #555 . Those should be corrected so that all navigation calls work accordingly.

Acceptance Criteria

• All navigation requests within the application should use the useNavigate hook

Notes

Since the ModalUnhandledError component is quite simple, I took the opportunity to also refactor it to a functional component. The TxData component, however, is complex enough to deserve its own PR in a future moment, so I only made the smallest adjustment to fix the issue.

Security Checklist

• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.

[alexruzenhack]

Approved with a suggestion.