only those who are killed for refusing to sin are considered מת על קידוש השם
being killed for just bieng a jew just reduces the punishments after death because the pain of death and death itself is מכפר on some (but not all) of the עבירות and on this the גמרא says: מת מיתה משונה הוי ליה כפרה
According to the Chasam Sofer (YD 333), any Jew, even a rasha, who is killed by a goy, is considered a kadosh and receives a complete and immediate kapara for all sins.
I don’t know if there are other opinions, but it doesn’t hurt to lean לכף זכות.
However, this obviously doesn’t justify allowing a Jew to die, as was beautifully explained by previous posters.