ApolloSQLite -> Fix deserialize method for custom scalars

Sources/ApolloSQLite/SQLiteNormalizedCache.swift

@@ -7,7 +7,6 @@ import Apollo
 public enum SQLiteNormalizedCacheError: Error {
   case invalidRecordEncoding(record: String)
   case invalidRecordShape(object: Any)
-  case invalidRecordValue(value: Any)
 }
 
 /// A `NormalizedCache` implementation which uses a SQLite database to store data.

Sources/ApolloSQLite/SQLiteSerialization.swift

@@ -42,7 +42,7 @@ final class SQLiteSerialization {
     switch fieldJSONValue {
     case let dictionary as JSONObject:
       guard let reference = dictionary[serializedReferenceKey] as? String else {
-        throw SQLiteNormalizedCacheError.invalidRecordValue(value: fieldJSONValue)
+        return fieldJSONValue
       }
       return Reference(key: reference)
     case let array as [JSONValue]:

Tests/ApolloCacheDependentTests/LoadQueryFromStoreTests.swift

@@ -298,26 +298,11 @@ class LoadQueryFromStoreTests: XCTestCase, CacheTesting {
             XCTFail("Incorrect error type for primary error: \(error)")
             return
           }
-
           switch graphQLError.underlying {
-          case is JSONDecodingError:
-            if (cache is InMemoryNormalizedCache) {
-              // This is expected for in-memory caching
-              break
-            } else {
-              XCTFail("Incorrect error type for underlying with in-memory cache: \(graphQLError.underlying)")
-            }
-          #if canImport(ApolloSQLite)
-          case is SQLiteNormalizedCacheError:
-            if (cache is SQLiteNormalizedCache) {
-              // This is expected for SQLite caching
-              break
-            } else {
-              XCTFail("Incorrect error type for underlying with SQLite cache: \(graphQLError.underlying)")
-            }
-          #endif
+          case JSONDecodingError.couldNotConvert(value: _, to: _):
+            break
           default:
-            XCTFail("Incorrect error type for underlying: \(graphQLError.underlying)")
+             XCTFail("Invalid error type")
           }
         }
       }