APS scanning Improvements

1. isoLatin1 is moved to 2nd position
2. Typecasting now also checks for plist to ensure the typecasting does not resulted in unreadable string and only then, proceeding.

Author: “Akshay

swift-sdk/Internal/APNSTypeChecker.swift

@@ -66,36 +66,29 @@ struct APNSTypeChecker: APNSTypeCheckerProtocol {
 
         let encodings: [String.Encoding] = [
             .ascii,
+            .isoLatin1,
             .utf8,
             .utf16,
             .utf16BigEndian,
             .utf16LittleEndian,
             .utf32,
             .utf32BigEndian,
             .utf32LittleEndian,
-            .isoLatin1,
             .macOSRoman
         ]
 
-        var asciiString: String?
+        var plistString: String?
 
         for encoding in encodings {
-            if let string = String(data: data, encoding: encoding) {
-                asciiString = string
+            if let string = String(data: data, encoding: encoding),
+            let propertyListString = scan(string: string, begin: "<plist", end: "</plist>") {
+                plistString = propertyListString
                 break
             }
         }
 
-        guard let finalString = asciiString else {
-            ITBError("Failed to detect APNS type from provisioning file. Defaulting to type - Production. Please use IterableConfig.pushPlatform to manually set APNS platform type")
-            return [:]
-        }
-        
-        guard let propertyListString = scan(string: finalString, begin: "<plist", end: "</plist>") else {
-            return [:]
-        }
-        
-        guard let propertyListData = propertyListString.data(using: .utf8) else {
+        guard let propertyListData = plistString?.data(using: .utf8) else {
+            ITBDebug("Failed to detect APNS type from provisioning file. Defaulting to type - Production. Please use IterableConfig.pushPlatform to manually set APNS platform type")
             return [:]
         }