chore: backport enterprise customers payment changes to 0.86

[AdityaHegde]

Change in #9512 were done on new billing changes. Back porting those in the old code so that we can patch 0.86.

Assumes that enterprise customers will have paymentCustomerId.

Checklist:

• Covered by tests
• Ran it and it works as intended
• Reviewed the diff before requesting a review
• Checked for unhandled edge cases
• Linked the issues it closes
• Checked if the docs need to be updated. If so, create a separate Linear DOCS issue
• Intend to cherry-pick into the release branch
• I'm proud of this work!

[pjain1]

@AdityaHegde mentioned to ignore this CI failure as it might be due to cherry pick.