2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/99909This paper is being withdrawn because an error was discovered in lemma 4.3. Although the rest of the paper appears to be correct, this error invalidates the proof of theorem 3.1 and theorem 3.3.This paper has been withdrawnMetric Geometry52A40, 52C26, 52C23text