Fix CA1310 analyzer error by specifying StringComparison.Ordinal in CustomIntSerializer

Co-authored-by: javiercn <[email protected]>

Author: Copilot

src/Components/test/testassets/Components.TestServer/CustomIntSerializer.cs

@@ -26,7 +26,7 @@ public int Restore(ReadOnlySequence<byte> data)
         var bytes = data.ToArray();
         var text = Encoding.UTF8.GetString(bytes);
 
-        if (text.StartsWith("CUSTOM:") && int.TryParse(text.Substring(7), out var value))
+        if (text.StartsWith("CUSTOM:", StringComparison.Ordinal) && int.TryParse(text.Substring(7), out var value))
         {
             return value;
         }