(mem. op.) ("waiver of the right to a jury trial may be deemed to occur if the party who paid the jury fee and requested a jury trial fails to appear for trial"); Avila-Gonzalez v. Avila, No. 03-18-00211-CV, 2018 WL 4869290, at *2 (Tex. App.-Austin Oct. 9, 2018, no pet.) (mem. op.)