### What happened?

It seems that adding a logging callback in the UI overwrites all callbacks added in the config rather than adding the callback to the existing callbacks

Reproduce - Start litellm with no callbacks - Add a single logging callback through the UI on the settings page - Add a callback to the litellm config and redeploy - Notice that only the logging callback will be invoked

Expected

Not sure, but I would assume that all callbacks set in the UI and the config should be invoked.

### Relevant log output

```shell

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### Are you a ML Ops Team?

Yes

### What LiteLLM version are you on ?

1.72.6

### Twitter / LinkedIn details

_No response_