Mesh_3: bug mesh_3D_image_with_image_initialization

[lrineau]

------------------------------------------------------------------
- Mesh_3_Examples/ProgramOutput.execution   of  mesh_3D_image_with_image_initialization
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CGAL::Random()::get_seed() = 1768256345
Searching for connected components...
  51 components were found.
Construct initial points...
  986 initial points were constructed.
Failure: 49 subdomains were meshed. Expected 50 instead.

https://cgal.geometryfactory.com/CGAL/testsuite/CGAL-6.2-Ic-81/Mesh_3_Examples/TestReport_Taylor_macOS-Apple_M2-boost_backend-arm64.gz

Can be reproduced on Linux with:

CGAL::get_default_random() = CGAL::Random(1768285287);

[lrineau]

@copilot Please try to reproduce: without a checkout of CGAL/cgal, add in the file mesh_3D_image_with_image_initialization.cpp the line

CGAL::get_default_random() = CGAL::Random(1768285287);

at the top of the main function. Then configure with CGAL with -DWITH_examples=ON as CMake argument. Then compile and run the target mesh_3D_image_with_image_initialization.

If the bug can be reproduce, try to find an explanation of the bug, propose a fix, try the fix by compiling and runnning again the same target.

[copilot-swe-agent]

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