Better error message on conflicting dataset metadata when updating using API

[feixieliz]

Description:

It appears that when using the client.update_dataset_metadata(request) method to update the dataset metadata, it will return the following error if the dataset already has metadata:
invariant_sdk.types.exceptions.InvariantError: Error calling method: PUT for path: /api/v1/dataset/metadata/your_dataset_name

Reproduction of the issue:

After successfully pushing traces to explorer using client.push_trace(request) and client.update_dataset_metadata(request), repeating the second command will trigger the above error.

Suggestion:

• It would be helpful to have a specific error message just like those for error code 500, 401, 404:

  invariant-sdk/python/invariant_sdk/client.py

  Lines 149 to 157 in 50c0ade

  	if response.status_code == 500:
  	raise InvariantAPIError(
  	f"Server error caused failure when calling method: {method} for path: {pathname}."
  	) from e
  	if response.status_code == 401:
  	raise InvariantAuthError(
  	f"Authentication failed when calling method: {method} for path: {pathname}."
  	) from e
  	if response.status_code == 404:

  This one returns 403.
• Add a feature to overwrite the old metadata for update (such as a force=true parameter) or add a feature to delete the old metadata (supporting a DELETE request only targeting metadata) without needing to delete the whole dataset.