Fix public key parsing logic

[koltsov-iv]

Fix public key parsing logic

Fix issue:

{"cl_type":{"List":"PublicKey"},"bytes":"02000000010e31a03ea026a8e375653573e0120c8cb96699e6c9721ae1ea98f896e6576ac30193b3800386aefe11648150f6779158f2c7e1233c8e9b423338eb71b93ae6c5a9","parsed":["010e31a03ea026a8e375653573e0120c8cb96699e6c9721ae1ea98f896e6576ac3","0193b3800386aefe11648150f6779158f2c7e1233c8e9b423338eb71b93ae6c5a9"]}

Unable to parse to CLValue. With error - invalid public key algorithm

Also, found that ed25519.NewPublicKey has no size validation and just wraps incoming bytes to PublicKey type.

Checklist

• Code is properly formatted
• All commits are signed
• Tests included/updated or not needed
• Documentation (manuals or wiki) has been updated or is not required