“An unexplained delay of four months or more can constitute laches and result in denial of mandamus relief … Here, relator did not file the petition for writ of mandamus until September 22, 2021–five months after the challenged order. We conclude that relator’s unexplained delay bars their right to mandamus relief.” In re Weatherall Family Funeral Services, LLC, No. 05-21-00826-CV (Nov. 8, 2021) (mem. op.).