Fixed default access setting showing incorrect tiers selection
Fixed default access setting showing incorrect tiers selection

closes https://github.com/TryGhost/Team/issues/1032

- fixes the selected default access value for specific tier not shown correctly on admin
- the value was correctly saved and fetched, but the value shown got overridden by default product selection and only the first product was shown as selected value

TryGhost/Ghost-Admin,TryGhost/Ghost-Admin