moved() and offset2D() bug. Different result when applying to different wire shape.

[garywill]

Bug 1: When moved and offset2D applied to different shapes (circle or non-circle) , they result in different distance. (See screenshot. The wires group on top has larger distance)

Bug 2: A circle wire made by section() applied to middle of a circle-extruded solid fails to apply moved and offset2D

To Reproduce

import cadquery as cq
import traceback
print("=============================================")
solid = (
    cq.Workplane()
    .rect(1, 1)
    .extrude(2)
    .faces('>Z')
    .circle(0.5)
    .extrude(2)
)
show_object(solid)
r=0.2

arrz = [0, 1, 2, 3, 4]
for z in arrz:
    try:
        print(f'in loop {z=}')
        wire0 = (cq.Workplane()
            .add(solid).toPending()
            .section(z)
            .wires()
            .val()
        )
        show_object(wire0, name=f'{z=} wire0')

        wire_u = wire0.moved(cq.Vector(0, 0,  r       )).offset2D(0.1)
        show_object(wire_u, name=f'{z=} wire_u')

        wire_m1= wire0.moved(cq.Vector(0, 0,  (1/3)*r )).offset2D(r)
        show_object(wire_m1, name=f'{z=} wire_m1')

        wire_m2= wire0.moved(cq.Vector(0, 0, -(1/3)*r )).offset2D(r)
        show_object(wire_m2, name=f'{z=} wire_m2')

        wire_d = wire0.moved(cq.Vector(0, 0, -r       )).offset2D(0.1)
        show_object(wire_d, name=f'{z=} wire_d')

    except Exception as err:
        traceback.print_exception(err)

Backtrace

=============================================
in loop z=0
in loop z=1
in loop z=2
in loop z=3
Traceback (most recent call last):
  File "<cq_editor-string>", line 27, in <module>
  File "/home/username/.local/lib/python3.11/site-packages/cadquery/occ_impl/shapes.py", line 2682, in offset2D
    obj = downcast(offset.Shape())
          ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/username/.local/lib/python3.11/site-packages/cadquery/occ_impl/shapes.py", line 374, in downcast
    f_downcast: Any = downcast_LUT[shapetype(obj)]
                                   ^^^^^^^^^^^^^^
  File "/home/username/.local/lib/python3.11/site-packages/cadquery/occ_impl/shapes.py", line 364, in shapetype
    raise ValueError("Null TopoDS_Shape object")
ValueError: Null TopoDS_Shape object
in loop z=4

Environment

OS:

$ pip3.11 list |grep -i -E "cq-editor|cadquery"
cadquery                      2.5.2
cadquery-ocp                  7.7.2
CQ-editor                     0.5.0

Using:
CQ-Editor