[bug #68033] mkoctfile does not work using version 11.0.92 on Windows 11

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Follow-up Comment #6, bug #68033 (group octave):

One of the tests fails after the changes from comment #2:

>>>>> processing
>>>>> D:\repo\Octave\octave-2\test\jupyter-notebook\jupyter-notebook.tst
***** testif HAVE_RAPIDJSON
 visibility = get (0, "defaultfigurevisible");
 toolkit = graphics_toolkit ();
 unwind_protect
   if (! strcmp (graphics_toolkit (), "qt"))
     try
       graphics_toolkit ("gnuplot");
     catch
       ## The system doesn't support gnuplot for drawing hidden
       ## figures.  Just return and have test marked as passing.
       return;
     end_try_catch
   endif
   set (0, "defaultfigurevisible", "off");

   n = jupyter_notebook (fullfile ("octave-kernel.ipynb"));
   n.run_all ();

   ## Test embedding images
   assert (n.notebook.cells{3}.outputs{1}.output_type, "display_data");
   assert (isfield (n.notebook.cells{3}.outputs{1}.data, "image/png"));
   assert (getfield (n.notebook.cells{3}.outputs{1}.data, "text/plain"),
           {"<IPython.core.display.Image object>"});

   ## Test running non-code cells
   markdown_cell = n.notebook.cells{1};
   n.run (1);
   assert (markdown_cell, n.notebook.cells{1});

   ## Test embedding textual output
   assert (n.notebook.cells{6}.outputs{1}.output_type, "stream");
   assert (n.notebook.cells{6}.outputs{1}.name, "stdout");
 unwind_protect_cleanup
   set (0, "defaultfigurevisible", visibility);
   graphics_toolkit (toolkit);
 end_unwind_protect
!!!!! test failed
fileread: cannot open file


These `jupyter_notebook` tests are a bit obscure to me. I find it hard to tell
which commands are actually run in Octave by these tests.
If I try to manually run the part which I think is relevant, I see the
following:

octave:2> n = jupyter_notebook (fullfile ("octave-kernel.ipynb"));

octave:3>  n.run_all ();

error: fileread: cannot open file
error: called from
    fileread at line 81 column 5
    embed_svg_image at line 667 column 7
    embedImage at line 623 column 11
    run at line 432 column 13
    run_all at line 473 column 9
octave:4> error: gl2ps_renderer::draw: internal pipe error
error: called from
    __opengl_print__ at line 207 column 7
    print at line 790 column 11
    embed_svg_image at line 662 column 7
    embedImage at line 623 column 11
    run at line 432 column 13
    run_all at line 473 column 9
octave:4> error: gl2ps_renderer::draw: internal pipe error
error: called from
    __opengl_print__ at line 207 column 7
    print at line 790 column 11
    embed_svg_image at line 662 column 7
    embedImage at line 623 column 11
    run at line 432 column 13
    run_all at line 473 column 9
octave:4>


An "internal pipe error" looks very much related to the change from comment
#2.
I'll try to find out which commands are actually causing this.



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