Rounded rectangles on paste layer render incorrectly in 3d viewer
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# Description
<!-- What is the current behavior and what is the expected behavior? -->
Rounded rectangles in the paste layer (drawn manually on top of a copper pad, with the paste technical layer deselected in the pad definition) are rendering "swirled" in the 3d renderer for the PCB. (Screenshot of incorrect rendering is attached)
{width=715 height=568}
The rounded rectangles draw correctly on the footprint editor and the PCB editor. (Screenshot of PCB editor with correct shapes attached. F.Cu layer is hidden; F.Paste visible on top of F.Mask.)
{width=735 height=600}
* The 3d render launched from within the footprint editor is also correct. It's the 3d render of the complete PCB that has the issue.
* Plotting the PCB to gerber files seems fine. Viewing in the gerber viewer shows expected shapes.
* Despite the "swirled" shapes having an angle to them, the original component geometry is not rotated; all lines are drawn parallel to the x and y axes.
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# Steps to reproduce
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1. Created a footprint with an SMD pad
2. Deselected "F.Paste" from the technical layers for the pad; only F.Cu and F.Mask selected.
3. Drew some rounded rectangles (0.25mm corner radius) on top of the pad.
4. Use the footprint in a PCB
Footprint file is attached in case this specific file holds the clue.
[Tai-Tech_HPC_6045NV.kicad_mod](/uploads/3dbf17c6f8760b749546f7df25fa2019/Tai-Tech_HPC_6045NV.kicad_mod)
# KiCad Version
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```
Application: KiCad 3D Viewer x64 on x64
Version: 10.0.0, release build
Libraries:
wxWidgets 3.3.2
FreeType 2.13.3
HarfBuzz 12.3.0
FontConfig 2.17.1
Platform: Windows 11 (build 26200), 64-bit edition, 64 bit, Little endian, wxMSW
OpenGL: NVIDIA Corporation, NVIDIA GeForce RTX 3070/PCIe/SSE2, 4.6.0 NVIDIA 576.40
wxWidgets: 3.3.2 (wchar_t,STL containers)
Boost: 1.90.0
OCC: 7.9.2
Curl: 8.18.0
ngspice: 45.2
Compiler: Visual C++ 1944 without C++ ABI
KICAD_IPC_API=ON
KICAD_USE_PCH=OFF
Locale:
Lang: en_US
Enc: UTF-8
Num: 1,234.5
Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8)
```
issue