Enable NFT allowance @acceptance tag in tests to remove conflict with ContractCall tests

[mgoelswirlds]

Problem

Since the NFT allowance APIs use the same token as the contract call API to test , there was an issue after deleting the token.

To reproduce:

1. Add @acceptance in the nftAllowance.feature and run the acceptance tests on integration using a custom image.

Solution

• We need to check how the serial numbers for the token are being set. After deletion that map should still be available to any other tests that use the same token.

Another line item is to change documentation in the openapi spec.

Alternatives

No response