`CustomerInfo`: added more tests to verify `managementURL` handles bad data (#1302)
`CustomerInfo`: added more tests to verify `managementURL` handles bad data (#1302)

Added these while looking into #1300, and they're useful to keep.
RevenueCat/purchases-ios,RevenueCat/purchases-ios,RevenueCat/purchases-ios,RevenueCat/purchases-ios,RevenueCat/purchases-ios