I had The.Mandalorian.S01.2160p.DSNP.WEB-DL.DDP5.1.Atmos.DV.MP4.x265-MZABI[rartv] converted when it came out.
Didn't remember there was an issue.
If you are certain the error is specific to those files, please try mp4mux - Bento4.
Command line is probably something like this:
mp4mux(bento4) --track dv.hevc#dv_profile=5,frame_rate=23.976 --track atmos.ec3 bento4sample.mp4
bento4 and mp4box are the only two tools I know on Windows that can get iOS compatible P5 DVH1 mp4.
(mp4muxer sometimes results in black screen)
bento4 is the tool I used before mp4muxer and mp4box, and is actually recommended by ShaoWeiguo, the author of mp4muxer, when I asked him about iOS black screen a long time ago.
But be careful bento4 has frame_rate mismatch issue so you have to specify frame_rate as above.