Revert "PartDesign: Bake in geometry transform after boolean"

This reverts commit 527b2de560.

The `bakeInTransform()` call uses `transformGeometry()` which converts
planar faces to BSplineSurfaces. This prevents the refine algorithm
(BRepBuilderAPI_RefineModel) from detecting and merging coplanar faces,
breaking the Refine option for Boolean operations.

This matches Part WB's Boolean behavior which does not use
`bakeInTransform()` and has working refine functionality.

src/Mod/PartDesign/App/FeatureBoolean.cpp

@@ -153,8 +153,6 @@ App::DocumentObjectExecReturn* Boolean::execute()
         }
     }
 
-    result.bakeInTransform();
-
     result = refineShapeIfActive(result);
 
     if (!isSingleSolidRuleSatisfied(result.getShape())) {