[Cashtab] Add tooltipped icon on Agora Offers created by the token creator

Summary: Useful visual reference to distinguish sell offers from the tokens mint address vs other sell offers.

Test Plan:
npm test

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Subscribers: Fabien

Differential Revision: https://reviews.bitcoinabc.org/D17441