names with bidirectional text get split up on old messages

Can reproduce CR, name tested C-Deer "مرحبا tested with per-community profile, retroactively shows name split in any existing messages: Canary Desktop 2026.901.185447, Web 2026.829.224002, Linux 7.0.0-30-generic (x64), Electron 42.10.0, Chrome 148.0.7778.280, Node 24.18.1, Locale en-US