Mobs summoned using /summon have no weapons

When /summon minecraft:skeleton is used, the created skeleton has no bow; this was not the case in prior versions.

Affected mobs

• Skeletons → No bow
• Stray → No bow
• Illusioner → No bow
• Vex → No sword
• Wither Skeleton → No sword
• Zombie Pigman → No sword
• Vindicator → No axe