fix: add missing xml.dom.minidom.*.nodeType type

[kkirsche]

This adds missing nodeType type hints. Each node uses one of these:
https://github.com/python/cpython/blob/157aef79b07e07bf115e49cdf5ff25e74c66354e/Lib/xml/dom/__init__.py#L18

This continues to address #6886

As seen here:

• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L328
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L348
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L666
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L991
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1093
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1200
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1216
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1307
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1368
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1407
• https://github.com/python/cpython/blob/main/Lib/xml/dom/minidom.py#L1551

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉