fix: [Freetext import] handle end of sentence periods and brackets better, fixes #7163
fix: [Freetext import] handle end of sentence periods and brackets better, fixes #7163

MISP/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP