fix unable to cast object of type 'System.Double' to type

[MarkWard0110]

Fix unable to cast exceptions thrown when using the following code from Semantic Kernel

            var ollamaSettings = new OllamaPromptExecutionSettings { NumPredict = 500, Temperature = 0.5f };
            ollamaSettings.ExtensionData = new Dictionary<string, object>
            {
                { "num_ctx", 4096 },
                { "min_p", 0f },
            };


            // Example 4. Invoke the kernel with a templated prompt and execution settings
            arguments = new(ollamaSettings) { { "topic", "dogs" } };          
            result = await kernel.InvokePromptAsync("Tell me a story about {{$topic}}", arguments);

[awaescher]

Merged, thanks Mark!