Pillager's "not attacking" pose is inconsistent with other illagers

Pillagers always have "unlinked" arms, even when not attacking. This is inconsistent with all the other illagers, as when they don't attack, their arms are "linked", similarly to actual villagers. A fix would be to either:

1. Unlink all illagers' and villagers' arms, or
2. Link the arms of the pillager when it is not attacking/targeting a village, which should be WAY easier to do than the former.