Prevent invalid chunk message when loading SC4

Exception messages were being logged when classifying the file type. This is generally unwanted as it will happen in normal cicumstances.

src/openrct2/FileClassifier.cpp

@@ -89,7 +89,8 @@ static bool TryClassifyAsS6(IStream * stream, ClassifiedFileInfo * result)
     }
     catch (const Exception& e)
     {
-        Console::Error::WriteLine(e.GetMessage());
+        // Exceptions are likely to occur if file is not S6 format
+        log_verbose(e.GetMessage());
     }
     stream->SetPosition(originalPosition);
     return success;