Split a space-delimited scope string into individual scopes, dropping empty
elements so an empty or all-whitespace claim yields no scopes (an empty
string would otherwise split into a spurious single "" scope). Shared with
introspection's scope parsing (RFC 7662 §2.2).
Split a space-delimited scope string into individual scopes, dropping empty elements so an empty or all-whitespace claim yields no scopes (an empty string would otherwise split into a spurious single "" scope). Shared with introspection's scope parsing (RFC 7662 §2.2).