[NFT] Display collection name when not present in CEP47 Metadata

[0xkynz]

Issue Description:

In the context of the CasperDash marketplace, it is essential to provide users with clear and informative information about NFT. Currently, the metadata for CEP47 tokens may not always include the name. To enhance the user experience and ensure transparency, it is advisable to implement a feature that displays the collection name instead of name even when it is not explicitly defined in the CEP47 metadata.