Issue when patterning a hole intersecting a chamfer edge

### Problem description

I created this minimum viable bug file. Also works if the base shape was created as a revolution with the chamfer in the revolved sketch. I can see how this would happen lol

### Workbench affected?

Part Design

### Steps to reproduce

download file below, rename to FCStd, open

https://github.com/user-attachments/assets/eebf06bb-86a6-44d1-bcdf-6963e47ecd17

alternatively, recreate the geometry shown above

### Expected behavior

Hole patterns as expected

### Actual behavior

Visual bugs, holes are closed and another face disappears

### Development version About Info (in Safe Mode)

```shell
OS: Windows 11 build 26200
Architecture: x86_64
Version: 1.2.0dev.20260609 (Git shallow)
Build date: 2026/06/09 14:33:40
Build type: Release
Branch: grafted,grafted
Hash: 9cb82b95e9f52f3ac2edc9d42525b39a1d77532a
Python 3.11.15, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3
shiboken 6.8.3, xerces-c 3.3.0, Clipper2 , IfcOpenShell 0.8.2, OCC 7.8.1
Locale: English/United States (en_US) [ OS: English/United States (en_US) ]
Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/
Navigation Style/Orbit Style/Rotation Mode: CAD/Rounded Arcball/Window center
Logical DPI/Physical DPI/Pixel Ratio: 96/128.093/1
```

### Last known good version (optional)

```shell

```