`gui/settings-manager` overwrites the new "siege operator" work detail when loading an pre-53.01 saved work detail

[ab9rf]

as reported on discord

[Alistair-Afton]

@ab9rf Fixed in DFHack/scripts#1630. Saved built-ins are now matched by identity instead of vector position, so built-ins added by newer DF versions are preserved and old custom details are restored after them.