[Explorer] fix copy address issue

Summary: On any address page, the copy button was adding some extra spacing. Fixed by removing some unecessary if rendering

Test Plan: run the app and see if the copy address button works properly

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Subscribers: Fabien

Differential Revision: https://reviews.bitcoinabc.org/D13076