Full support for CryptoPunks on V2 endpoints

We fixed a bug with CryptoPunks that was preventing users from retrieving metadata or rendering.

Check out a few examples:

• Rendering: https://api.center.dev/v2/ethereum-mainnet/0xb47e3cd837ddf8e4c57f05d70ab865de6e193bbb/nft/1/render/medium
• Metadata: https://api.center.dev/v2/ethereum-mainnet/0xb47e3cd837ddf8e4c57f05d70ab865de6e193bbb/nft/1/metadata