payments advanced settings button hidden when payments disabled

[jkup]

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

Fix #5384

Auditors @bbondy @bsclifton

Test Plan:

1. Go to Preferences > Payments
2. You should not see the advanced settings button
3. Enable Payments
4. You should see the advanced settings button
5. Disable Payments
6. You should not see the button

[bbondy]

moving to 0.12.9.

[bsclifton]

++