Add support for `pin_unselected` in new UV Packing API. Regression introduced by API change in rBe3075f3cf7ce. Duplicate change to rB0ce18561bc82 in master.
Add support for `pin_unselected` in new UV Packing API. Regression introduced by API change in rBe3075f3cf7ce. Duplicate change to rB0ce18561bc82 in master.