Skip isolates in fribidi_get_par_direction
Skip isolates in fribidi_get_par_direction

Copy the logic from fribidi_get_par_embedding_levels_ex.

Most likely, this should have been added in commit
f20b6480b9cd46dae8d82a6f95d9c53558fcfd20 but was omitted by accident.

ShiftMediaProject/fribidi,behdad/fribidi,behdad/fribidi,ShiftMediaProject/fribidi,khaledhosny/fribidi,khaledhosny/fribidi,khaledhosny/fribidi,ShiftMediaProject/fribidi,behdad/fribidi