Issue: Fetching token standard for a token that doesn't have one returns "3" for NFT

[ZenRepublic]

Description

0 - Non fungible token (Simple NFT)

1 - Semi fungible token (SFT)

2 - Fungible token (SPL)

3 - Non fungible edition (NFT edition)

4 - Programmable NFT

5 - Programmable NFT Edition

these are token standards based on asset type. some assets havent specified token standard (bad from their side) and so the Metadata.get_token_standard() should return null

however, at least for token22 tokens (t3DohmswhKk94PPbPYwA6ZKACyY3y5kbcqeQerAJjmV for example) it token standard is set as "3" which means non fungible NFT edition

Suggested Improvements

No response

Extra Information

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