[nits] Update string descriptions of Requests

Author: nan-li

iOS_SDK/OneSignalSDK/OneSignalUser/Source/Requests/OSRequestFetchUser.swift

@@ -58,7 +58,7 @@ class OSRequestFetchUser: OneSignalRequest, OSUserRequest {
         self.aliasLabel = aliasLabel
         self.aliasId = aliasId
         self.onNewSession = onNewSession
-        self.stringDescription = "OSRequestFetchUser with aliasLabel: \(aliasLabel) aliasId: \(aliasId)"
+        self.stringDescription = "<OSRequestFetchUser with aliasLabel: \(aliasLabel) aliasId: \(aliasId)>"
         super.init()
         self.method = GET
         _ = prepareForExecution() // sets the path property
@@ -88,7 +88,7 @@ class OSRequestFetchUser: OneSignalRequest, OSUserRequest {
         self.aliasLabel = aliasLabel
         self.aliasId = aliasId
         self.onNewSession = coder.decodeBool(forKey: "onNewSession")
-        self.stringDescription = "OSRequestFetchUser with aliasLabel: \(aliasLabel) aliasId: \(aliasId)"
+        self.stringDescription = "<OSRequestFetchUser with aliasLabel: \(aliasLabel) aliasId: \(aliasId)>"
         super.init()
         self.method = HTTPMethod(rawValue: rawMethod)
         self.timestamp = timestamp

iOS_SDK/OneSignalSDK/OneSignalUser/Source/Requests/OSRequestUpdateProperties.swift

@@ -54,7 +54,7 @@ class OSRequestUpdateProperties: OneSignalRequest, OSUserRequest {
 
     init(properties: [String: Any], deltas: [String: Any]?, refreshDeviceMetadata: Bool?, identityModel: OSIdentityModel) {
         self.identityModel = identityModel
-        self.stringDescription = "<OSRequestUpdateProperties with properties: \(properties) deltas: \(String(describing: deltas)) refreshDeviceMetadata: \(String(describing: refreshDeviceMetadata))>"
+        self.stringDescription = "<OSRequestUpdateProperties with properties: \(properties) deltas: \(String(describing: deltas)) refreshDeviceMetadata: \(refreshDeviceMetadata ?? false)>"
         super.init()
 
         var propertiesObject = properties