SSErrorDomain Code 110 - Cannot connect to iTunes Store

### Platform

- [x] iOS
- [ ] macOS
- [ ] tvOS

### In app purchase type

- [ ] Consumable
- [x] Non-consumable
- [ ] Auto-Renewable Subscription
- [ ] Non-Renewing Subscription

### Environment

- [ ] Sandbox
- [x] Production

### Version
0.13.3

## Report

### Issue summary
I saw in the Crashlytics logs a non-fatal error "Can not connect to the iTunes Store". We also received several messages from users about this issue.

This is stack trace from the Crashlytics.
```
0
AppName
CLSUserLogging.m - Line 319
CLSUserLoggingRecordError
1
AppName
Crashlytics.m - Line 453
-[Crashlytics recordError:withAdditionalUserInfo:]
arrow_right 2
AppName
AppNameProducts.swift - Line 27
AppNameProducts.retrieveProducts() -> Promise<[SKProduct]> empty-list empty-list
3
AppName
AppNameProducts.swift - Line 0
AppNameProducts.retrieveProducts() -> Promise<[SKProduct]> empty-list empty-list
4
SwiftyStoreKit
ProductsInfoController.swift - Line 0
RetrieveResults
5
SwiftyStoreKit
ProductsInfoController.swift - Line 68
ProductsInfoController.retrieveProductsInfo(Set, completion : (RetrieveResults) -> ()) -> () empty-list completion
6
SwiftyStoreKit
ProductsInfoController.swift - Line 0
ProductsInfoController.retrieveProductsInfo(Set, completion : (RetrieveResults) -> ()) -> () empty-list completion
7
SwiftyStoreKit
InAppProductQueryRequest.swift - Line 76
partial apply for InAppProductQueryRequest.(performCallback(RetrieveResults) -> ()).(closure #1)
8
SwiftyStoreKit
InAppReceiptRefreshRequest.swift - Line 0
_T0Ieg_IeyB_TR
```

Start with AppNameProducts.swift line 27 and trace product retrieval through SwiftyStoreKit's ProductsInfoController.swift line 68 and InAppReceiptRefreshRequest.swift. Determine how production iOS non-consumable retrieval reports SSErrorDomain code 110; done means the reported connection failure is addressed or its handling is clarified.

Written by the indexing model from the issue text.