refactor: modify update all dataset configurations to match on existing types

[vid277]

Please indicate what issue this PR is related to and @ any maintainers who are relevant

Example Request:

curl --request POST \
  --url http://localhost:8090/api/organization/update_dataset_configs \
  --header 'Authorization: tr-******************************' \
  --header 'Content-Type: application/json' \
  --header 'TR-Organization: ******************************' \
  --data '{
  "organization_id": "******************************",
  "from_configuration": {
    "LLM_DEFAULT_MODEL": "gpt-4o-mini"
  },
  "to_configuration": {
    "LLM_DEFAULT_MODEL": "gpt-4o",
    "SYSTEM_PROMPT": "You are a helpful assistant"
  }
}'