* fix: add error handling for null and undefined inputs in u8aToU8a function * fix: update u8aToU8a function to handle null/undefined inputs with strict checking * docs: update documentation for u8aToU8a
* fix: add error handling for null and undefined inputs in u8aToU8a function * fix: update u8aToU8a function to handle null/undefined inputs with strict checking * docs: update documentation for u8aToU8a