vfs: handle shutil.rmtree deprecation of onerror in Python 3.12...
vfs: handle shutil.rmtree deprecation of onerror in Python 3.12
Tests would fail with warnings:
.../mercurial/vfs.py:289: DeprecationWarning: onerror argument is deprecated, use onexc instead
The excinfo changed slightly, but we don't use it anyway.