Another flop: HGTV star ChristinaHaack and Josh Hall have both shockingly filed paperwork to end their nearly three-year marriage. Hall has cited irreconcilable differences as the cause of their split and listed the date of separation as July 8. Things could get messy, as it’s claimed they didn’t sign a prenup upon tying the knot in 2022. Hall is asking for alimony from the blonde beauty but requested she be forbidden from doing the same. According to the report, the mom-of-three filed on Monday, July 15, so details of her petition are still being processed. The pair don’t have any children to…