Generated BibTeX citations do not include the editor in preliminaries

[abelgomez]

Describe the bug

While plain-text citations include the editor name in "preliminaries" items, they do not in the generated BibTeX citation, e.g.:

Comité de programa. In: Sáenz-Pérez, F. (ed.) Actas de las XXV Jornadas de Programación y Lenguajes (PROLE 2026). Sistedes (2026). https://hdl.handle.net/11705/PROLE/2026/PRELIMINARES/COMITES

vs.

@misc{11705:PROLE:2026:PRELIMINARES:COMITES,
  title     = {{Comit\'{e} de programa}},
  url       = {https://hdl.handle.net/11705/PROLE/2026/PRELIMINARES/COMITES},
  year      = {2026},
  publisher = {{Sistedes}},
  booktitle = {{Actas de las XXV Jornadas de Programaci\'{o}n y Lenguajes (PROLE 2026)}}
}