[Cashtab] [Alias] Hyperlink the alias address preview

Summary:
T2994

Turn the alias address preview into a hyperlink on both send and sendToken screens.

Test Plan:

• enable Alias in ticker.js
• enter a valid alias in send, click on the rendered hyperlink and ensure a new window is opened containing the address via explorer
• enter a valid alias in sendToken, click on the rendered hyperlink and ensure a new window is opened containing the address via explorer
• ensure no regression to invalid aliases, valid ecash addresses and invalid ecash addresses

Reviewers: bytesofman, #bitcoin_abc

Reviewed By: bytesofman, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D13307