Field parameter is order specific #1620

Describe the bug
When querying Tableau Server or online and specifying the return fields, the value of _default_ must be first if present, otherwise a Bad Request error is thrown. Query string keys and values should not be order specific.

I believe this to be a server side bug, but intend to investigate compensating for it within TSC.

Versions
Details of your environment, including:

• Tableau Server version (or note if using Tableau Online): Tableau Online
• Python version: 3.12
• TSC library version: 0.38

To Reproduce
Steps to reproduce the behavior. Please include a code snippet where possible.

The below will produce the error most of the time. sets in python are not ordered containers, and as such where the _default_ value appears in the value list is non-deterministic.

import os

from dotenv import load_dotenv
import tableauserverclient as TSC

load_dotenv()

server = TSC.Server(os.environ["TABLEAU_SERVER"], use_server_version=True)
auth = TSC.PersonalAccessTokenAuth(os.environ["TOKEN_NAME"], os.environ["TOKEN_SECRET"], site_id=os.environ["TABLEAU_SITE"])
print(auth)

with server.auth.sign_in(auth):
    workbooks = server.workbooks.fields(TSC.RequestOptions.SelectFields.Owner.Email)
    print(list(workbooks))

Results
What are the results or error messages received?

    raise ServerResponseError.from_response(server_response.content, self.parent_srv.namespace, url)
tableauserverclient.server.endpoint.exceptions.ServerResponseError:

        409004: Bad Request
                Invalid Parameter. (0xB4EAB088 : Invalid field names '[_default_]' for Workbook. Valid field names are: [ContentUrl, Description, Size, DefaultViewId, CreatedAt, HasExtracts, UpdatedAt, Name, SheetCount, ShowTabs, ShareDescription, Id, LastPublishedAt, Tags, PrimaryContentUrl].)

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