The Account Tools Finish setup button should point to KYC flow

[vladolaru]

Describe the bug

The "Finish setup" button in the Account Tools subsection of the Account Details section should link to the KYC flow for all accounts that didn't complete KYC (initial KYC for POed accounts), regardless if they are live or sandboxed accounts.

Furthermore, the "Finish setup" button should not be visible if the account has completed KYC (details_submitted).

Right now, the "Finish setup" button links to the Stripe Express dashboard, just like the "Edit details" link does.

To Reproduce

1. Onboard a PO account
2. Click on 'Finish setup' in the Account Tools sub-section
3. You end up in the Stripe Express dashboard

Actual behavior

The Stripe Express dashboard is opened:

Expected behavior

The Stripe KYC flow should be opened:

Additional context

#7914