paraview: Fix OpenGL search to ignore glvnd (#11400)

var/spack/repos/builtin/packages/paraview/package.py

@@ -171,6 +171,7 @@ def nvariant_bool(feature):
             '-DVTK_USE_SYSTEM_EXPAT:BOOL=ON',
             '-DVTK_USE_SYSTEM_TIFF:BOOL=ON',
             '-DVTK_USE_SYSTEM_ZLIB:BOOL=ON',
+            '-DOpenGL_GL_PREFERENCE:STRING=LEGACY'
         ]
 
         # The assumed qt version changed to QT5 (as of paraview 5.2.1),