Liberty - Unlawful Orders - no transformation type for Javelineer

Game and System Information

• Version: 1.19.19
• OS: Windows

Description of the bug

Loyalist units are intended to become undead when the sun sets, but Javelineers remain Javelineers.

"20260922 20:08:40 error wml: Could not convert a Javelineer, please report!" in logs.

wesnoth-20260922-190237-227031233.log

Replay: liberty_javelineer_replay.gz. A Spearmen levels up which allows the enemy side to have a Javelineer (Turn 7, hex 33,16)

Steps to reproduce the behavior

See replay in description.

Expected behavior

Javelineer becomes an undead unit. Maybe using Deathblade (same as Pikeman) would work well?

Additional context

No response