adding classmethod to ensure balance check

[nk7up]

Description of change

JIRA: https://qlik-dev.atlassian.net/browse/SAC-29321

1. Converted the method to a classmethod to ensure the balance is topped up before running into any class level test runs. The setUpClass method is defined in the tap overrides the base_case one in tap-tester to ensure balance check is done at this level before any class invoked tests run.
2. Also, added a check just before the stream 'transfers' to ensure the balance is adequate before doing any transfer operations
3. Removed fields such as customer_account as it is not part of the actual fields returned by the tap itself. For now excluded these.

Manual QA steps

Risks

Rollback steps

• revert this branch

AI generated code

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• this PR has been written with the help of GitHub Copilot or another generative AI tool

[bhtowles]

We don't need to call it in both places right?

[nk7up]

It was mainly kept as a safety net kind of to check if the classmethod works or not. I can remove it.

[bhtowles]

Would like to add logging to the ensure balance method so we can monitor this over time. Also consider bumping the check from 1,000 to 10,000 for both comparison and top-up amount.

Suggested change

	cls.ensure_available_balance()
	if balance.get('currency') == 'usd':
	balance_usd = balance.get('currency', 0)
	LOGGER.info("balance_usd: %s, pending_usd: %s", balance_usd, pending_amount_usd)
	if balance_usd - pending_amount_usd <= 100000:
	LOGGER.info("Balance - Pending has fallen below $1,000. Adding $1,000 to balance")
	stripe_client.PaymentIntent.create(

[nk7up]

@bhtowles updated logic and expected keys for all fields