BUG: Clean-up ._* files in venv to fix Intel MacOS issue

dot_clean recursively merges all ._* files with their corresponding
native files. Applying it in `macpython-build-tarball.sh` removes them
from future tar balls, applying it in
`scripts/macpython-build-module-wheels.sh` addresses the ITK v5.4.3
Intel MacOS error:
```
+ /Users/svc-dashboard/D/P/ITKPythonPackage/scripts/../venvs/3.11/bin/python3 -m pip install --no-cache delocate
Fatal Python error: init_import_site: Failed to import the site module
Python runtime state: initialized
Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 980, in exec_module
  File "<frozen site>", line 616, in <module>
  File "<frozen site>", line 599, in main
  File "<frozen site>", line 531, in venv
  File "<frozen site>", line 384, in addsitepackages
  File "<frozen site>", line 226, in addsitedir
  File "<frozen site>", line 179, in addpackage
  File "<frozen codecs>", line 322, in decode
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa3 in position 45: invalid start byte
```

Author: Simon Rit

scripts/macpython-build-module-wheels.sh

@@ -71,6 +71,7 @@ fi
 
 VENV="${VENVS[0]}"
 Python3_EXECUTABLE=${VENV}/bin/python3
+dot_clean ${VENV}
 ${Python3_EXECUTABLE} -m pip install --no-cache delocate
 DELOCATE_LISTDEPS=${VENV}/bin/delocate-listdeps
 DELOCATE_WHEEL=${VENV}/bin/delocate-wheel

scripts/macpython-build-tarball.sh

@@ -13,6 +13,7 @@ if test $(arch) == "arm64"; then
 fi
 
 pushd /Users/svc-dashboard/D/P > /dev/null
+dot_clean ITKPythonPackage
 tar -cf ITKPythonBuilds-macosx${arch_postfix}.tar \
   ITKPythonPackage/ITK-* \
   ${tbb_contents} \