Update Model UI fixes

[estohlmann]

Description of changes:

• Stopped models still show in the UI, which will cause 5xx issues because the model isn't in LiteLLM
• Cannot set a model to streaming or textgen from the UI. The payload doesn't include them
• Payload for UpdateModel needs to be called autoScalingInstanceConfig instead of autoScalingConfig
• Models that were just stopped in the UI cannot be started unless I refresh my page, even after the model shows as Stopped

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