This lead to wrong, stretched UVs regardless of the ON/OFF state of
"Correct Aspect" option (some code in the operator respected this
setting properly, whereas it was hardcoded in another part).
Before rB9296ba867462, `uvedit_pack_islands_multi` was always called
with `correct_aspect` = false for the UnwrapOptions.
After rB9296ba867462, `ED_uvedit_pack_islands_multi` was always called
with `correct_aspect` = true for the UVPackIsland_Params.
Both seem wrong [in that they do not take the operator setting into
account]. Now respect that setting [same as the following
`uv_map_clip_correct_multi` does as well btw.]
Now results match 2.90 [where this was still python] perfectly.
Maniphest Tasks: T85194
Differential Revision: https://developer.blender.org/D10246
d917d7cf94