fix: Uint8Array check rare issue

[Muhammad-Altabba]

Fixes #25 as in https://github.com/paulmillr/noble-hashes/issues/25#issuecomment-1750106284

[paulmillr]

?. operator should be avoided because it's new and because

  return (
    a instanceof Uint8Array ||
    (a != null && typeof a === 'object' && a.constructor.name === 'Uint8Array')
  );

does all the proper work itself

thanks