Rotation of groups is incorrect in HTML

[mimshwright]

When a group has rotation it's incorrectly applied in the code. I've seen this behavior in HTML but not sure whether all code is affected.

It appears that perhaps the rotation is applied to the group and also to the children of the group.

The effects compound when there are are multiple groups or multiple rotations inside the groups.

[mimshwright]

Seems this is how the nodes in the figma API are represented.

For some reason, a group with rotation also has rotated nodes.

• group 1 - rotation 45°
  • child 1 - rotation 45°

if the child is also rotated 45° the effect is doubled

• group 1 - rotation 45°
  • child 1 - rotation 90°

So seems like we need to subtract the rotation of the parent from the children.