macOS Apple Silicon build fixes

[basile-simvia]

@mohd-afeef-badri @nitawa as discussed during our video call last week, here are the changes related to the Salome 9.14 version on macOS.

Adapt GUI to build on macOS (Apple Silicon) with Qt5, Qwt 6.2, VTK 9, ParaView 5.13, PyQt5 + SIP 6, recent graphviz, and the macOS OpenGL profile. All changes are guarded so non-macOS builds are not affected.

CMake

• CMakeLists.txt: disable FIND_PACKAGE(SalomeSIP REQUIRED); SIP is provided directly by the Homebrew/PyQt5 install on this host.
• src/PV3DViewer/CMakeLists.txt: remove PV3DViewer from its own _link_LIBRARIES list (self-dependency caused link failure).
• src/SALOME_PYQT/SALOME_PYQT_GUILight/CMakeLists.txt, src/SALOME_PYQT/SalomePyQt/CMakeLists.txt, tools/PyConsole/src/python/CMakeLists.txt, tools/PyEditor/src/python/CMakeLists.txt:
  • fix typo $(QT_INCLUDES) -> ${QT_INCLUDES};
  • add SIP build output dir to include path (_sip_SOURCES_sipbuild);
  • add -Dprotected=public -DSIP_PROTECTED_IS_PUBLIC for SIP 6;
  • build PyConsolePy and PyEditorPy as Python MODULEs instead of plain shared libs;
  • add ${QWT_INCLUDE_DIR} to PyConsole include path.

C++ portability

• src/LightApp/LightApp_ExtInfoDlg.cxx: gvRenderData() takes 'size_t*' for the length parameter on recent graphviz (macOS), 'unsigned int*' elsewhere.
• src/OpenGLUtils/OpenGLUtils_FrameBuffer.cxx: skip the GL_NUM_EXTENSIONS / glGetIntegerv code path on macOS (legacy GL profile only).

Qwt 6.2 compatibility (src/Plot2d/*)

• Plot2d_Curve.cxx: setSamples(NULL, NULL, 0) is ambiguous in 6.2 - cast to 'const double*'.
• Plot2d_Histogram.cxx: provide template alias QwtArray = QVector
  (removed in 6.2).
• Plot2d_PlotItems.{cxx,h}: qwt_compat.h removed in 6.2, include qwt_global.h and redefine QwtDoubleRect = QRectF and qwtMin = qMin.
• Plot2d_ViewFrame.{cxx,h}: typedef QList QwtValueList; in setCurveType(), QwtSplineCurveFitter is gone in 6.2 - use the built-in QwtPlotCurve::Fitted attribute instead.

VTK 9 compatibility (src/VTKViewer/*)

• VTKViewer_GeometryFilter.cxx: replace GetCellLinks() with GetLinks() on VTK >= 9 (three call sites).
• VTKViewer_OpenGLHelper.{cxx,h}: on macOS include <OpenGL/gl.h>
  instead of <GL/glx.h>; skip the glXGetProcAddressARB-based loader in Init() (ARB shader entry points are exposed directly on macOS); add GLcast/GLcastInv macros for the opaque GLhandleARB type on macOS and apply them to vglGetShaderivARB / vglGetShaderInfoLogARB / vglGetProgramivARB call sites.
• VTKViewer_OpenGLRenderer.cxx, VTKViewer_Texture.cxx: drop the vtkglew / vtk_glew includes on macOS.
• VTKViewer_PolyDataMapper.cxx: wrap current_program with GLcastInv() before passing to vglUseProgramObjectARB().

ParaView 5.13 compatibility

• src/PVViewer/PVViewer_Core.cxx: pqOptions is gone in PV 5.13. Comment out the GetHelpSelected/GetUnknownArgument/... block and the argv free/delete (now owned by pqPVApplicationCore), and include vtkProcessModule + vtkCLIOptions for the replacement API (left commented out, no current call site needs it).