math/vtk9: Build and install python bytecode

• Bump PORTREVISION for package change

from graphics/py-mayavi build log:

>> Checking for filesystem violations... done

>> Error: Filesystem touched during build:

extra: usr/local/lib/python3.11/site-packages/__pycache__/vtk.cpython-311.pyc
extra: usr/local/lib/python3.11/site-packages/vtkmodules/__pycache__
extra: usr/local/lib/python3.11/site-packages/vtkmodules/util/__pycache__

>> Cleaning up wrkdir

> Cleaning for py311-mayavi-4.8.2

Approved by: portmgr (blanket)
With hat: python