[Cashtab] Patch ts bug in button components and propagate type

Summary:
Something else discovered in D17074 but not directly related

The disabled prop is optional, we do not require disabled prop on every button.

The name prop is required for CopyIconButton. Propagate this.

Note this was not caught until D17074 because tslinter only finds this in ts files, and Cashtab has not completely converted yet.

Test Plan: npm test

Reviewers: #bitcoin_abc, emack

Reviewed By: #bitcoin_abc, emack

Differential Revision: https://reviews.bitcoinabc.org/D17103