Update AspireOllamaChatClientExtensions.AddChatClient to allow configuring sensitive data

[JamesNK]

AddChatClient and AddKeyedChatClient should be updated with a way to configure OpenTelemetryChatClient.EnableSensitiveData.

See dotnet/aspire#11237 as an example of doing this with different methods.

[davidfowl]

We need more than this. We should also enable the MEAI telemetry sources for otel when calling AddOllama client or AddChatClient.

[aaronpowell]

We need more than this. We should also enable the MEAI telemetry sources for otel when calling AddOllama client or AddChatClient.

Don't we? I thought we did...