Fix IsOfflineException to Handle new MAUI type for integers on iOS (#42)

Author: arctouch-alejandrovarela

Float.Core/Extensions/Exception.extensions.cs

@@ -56,7 +56,18 @@ public static bool IsOfflineException(this Exception e)
 
                         if (code != null)
                         {
-                            switch (Convert.ToInt64(code, new NumberFormatInfo()))
+                            long convertedCode;
+
+                            try
+                            {
+                                convertedCode = Convert.ToInt64(code, new NumberFormatInfo());
+                            }
+                            catch (InvalidCastException) when (code is nint parsedCode)
+                            {
+                                convertedCode = long.Parse(parsedCode.ToString());
+                            }
+
+                            switch (convertedCode)
                             {
                                 // CannotFindHost
                                 // CannotConnectToHost