* Part: Fix Part_Extrude taper angle regression for internal faces
The taper angle for holes (inner wires) in `Part_Extrude` was not being
negated after the toponaming refactor, causing internal faces to taper
in the wrong direction compared to v0.21.2.
The original makeDraft function correctly handled inner wires by:
- Negating taper for all inner wires in Part_Extrude
- Negating taper only for multi-edge inner wires in PartDesign
This logic was controlled via an isPartDesign function parameter.
When makeElementDraft was introduced for toponaming support, it was
designed to use innerTaperAngleFwd/innerTaperAngleRev fields that were
never ported from realthunder's branch. The cleanup (commit c31ebeeee6)
removed references to these non-existent fields, leaving makeElementDraft
with no inner wire taper handling at all.
So, this fix ports the makeDraft inner wire logic to makeElementDraft by
adding the flag, and counting wires and then triggering proper angle
flip depending on the flag/wire situation.
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Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>
This PR adds the same functionality as provided by Part Extrude.
The used code parts are sorted out to a new helper function that is used by Part and PartDesign.
